build(common): update project references to use $(RepoRoot) for paths (#44639)

<!-- Enter a brief description/summary of your PR here. What does it
fix/what does it change/how was it tested (even manually, if necessary)?
-->
## Summary of the Pull Request
Update project references across multiple projects to utilize
`$(RepoRoot)` for paths, ensuring consistency and improving
maintainability.

<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist
- [ ] Closes: N/A
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [x] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

<!-- Provide a more detailed description of the PR, other things fixed,
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments
This change affects the following projects: 
- `src/common/ManagedCsWin32/ManagedCsWin32.csproj`
- `src/common/Common.Search/Common.Search.csproj`
- `src/common/AllExperiments/AllExperiments.csproj`
- `src/modules/peek/Peek.Common/Peek.Common.csproj`
- `src/common/UITestAutomation/UITestAutomation.csproj`
- `src/common/GPOWrapperProjection/GPOWrapperProjection.csproj`
- `src/modules/powerrename/PowerRenameUITest/PowerRename.UITests.csproj`
- `src/common/LanguageModelProvider/LanguageModelProvider.csproj`
- `src/modules/Hosts/Hosts.Tests/HostsEditor.UnitTests.csproj`
- `tools/StylesReportTool/StylesReportTool.vcxproj`
- `src/common/interop/interop-tests/Common.Interop.UnitTests.csproj`
- `tools/MonitorReportTool/MonitorReportTool.vcxproj`
- `src/common/ManagedTelemetry/Telemetry/ManagedTelemetry.csproj`
- `src/modules/peek/Peek.FilePreviewer/Peek.FilePreviewer.csproj`
- `src/settings-ui/Settings.UI.Controls/Settings.UI.Controls.csproj`
- `src/common/Themes/Themes.vcxproj`
- `src/common/COMUtils/COMUtils.vcxproj`
-
`src/modules/cmdpal/Tests/Microsoft.CmdPal.UITests/Microsoft.CmdPal.UITests.csproj`
- `src/modules/imageresizer/tests/ImageResizer.UnitTests.csproj`

The changes were validated by running existing unit tests, which all
passed successfully.

<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed
Executed all unit tests related to the modified projects, confirming
that all tests passed without issues.
```

src/common/interop/HotkeyManager.cpp

@@ -14,7 +14,7 @@ namespace winrt::PowerToys::Interop::implementation
     }
 
     // When all Shortcut keys are pressed, fire the HotkeyCallback event.
-    void HotkeyManager::KeyboardEventProc(KeyboardEvent ev)
+    void HotkeyManager::KeyboardEventProc(KeyboardEvent /*ev*/)
     {
         // pressedKeys always stores the latest keyboard state
         auto pressedKeysHandle = GetHotkeyHandle(pressedKeys);

src/common/interop/PowerToys.Interop.vcxproj

@@ -1,6 +1,7 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props')" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <Import Project="$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props')" />
   <PropertyGroup>
     <AssemblyTitle>PowerToys.Interop</AssemblyTitle>
   </PropertyGroup>
@@ -38,7 +39,6 @@
     <ApplicationType>Windows Store</ApplicationType>
     <ApplicationTypeRevision>10.0</ApplicationTypeRevision>
   </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     
@@ -56,7 +56,7 @@
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup>
     <TargetName>PowerToys.Interop</TargetName>
-    <OutDir>..\..\..\$(Platform)\$(Configuration)\</OutDir>
+    <OutDir>$(RepoRoot)$(Platform)\$(Configuration)\</OutDir>
   </PropertyGroup>
   <PropertyGroup>
     <CopyCppRuntimeToOutputDir>true</CopyCppRuntimeToOutputDir>
@@ -80,7 +80,7 @@
     <ClCompile>
       <PrecompiledHeaderOutputFile>$(IntDir)pch.pch</PrecompiledHeaderOutputFile>
       <PreprocessorDefinitions>_WINRT_DLL;WINRT_LEAN_AND_MEAN;PowerToysInterop;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>$(SolutionDir)src\common\interop;../../;../;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(RepoRoot)src\common\interop;../../;../;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalUsingDirectories>$(WindowsSDK_WindowsMetadata);$(AdditionalUsingDirectories)</AdditionalUsingDirectories>
       <OmitDefaultLibName>false</OmitDefaultLibName>
       <AdditionalOptions>%(AdditionalOptions) /bigobj /Zc:twoPhase- </AdditionalOptions>
@@ -172,15 +172,15 @@
   <ImportGroup Label="ExtensionTargets" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
-    <Import Project="..\..\..\packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets" Condition="Exists('..\..\..\packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets')" />
-    <Import Project="..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets" Condition="Exists('..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets')" />
+    <Import Project="$(RepoRoot)packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets" Condition="Exists('$(RepoRoot)packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets')" />
+    <Import Project="$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets" Condition="Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets')" />
   </ImportGroup>
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('..\..\..\packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets'))" />
-    <Error Condition="!Exists('..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props'))" />
-    <Error Condition="!Exists('..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets'))" />
+    <Error Condition="!Exists('$(RepoRoot)packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(RepoRoot)packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets'))" />
+    <Error Condition="!Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', '$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props'))" />
+    <Error Condition="!Exists('$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(RepoRoot)packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets'))" />
   </Target>
 </Project>

src/common/interop/interop-tests/Common.Interop.UnitTests.csproj

@@ -1,6 +1,6 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <!-- Look at Directory.Build.props in root for common stuff as well -->
-  <Import Project="..\..\..\Common.Dotnet.CsWinRT.props" />
+  <Import Project="$(RepoRoot)src\Common.Dotnet.CsWinRT.props" />
 
   <PropertyGroup>
     <IsPackable>false</IsPackable>