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.
```

tools/BugReportTool/BugReportTool/BugReportTool.vcxproj

@@ -1,5 +1,6 @@
-<?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="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props')" />
   <PropertyGroup Label="Globals">
     <VCProjectVersion>16.0</VCProjectVersion>
@@ -8,7 +9,6 @@
     <RootNamespace>BugReportTool</RootNamespace>
     <ProjectName>BugReportTool</ProjectName>
   </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <PropertyGroup Label="Configuration">
     
@@ -16,7 +16,7 @@
   <PropertyGroup>
     <ConfigurationType>Application</ConfigurationType>
     <TargetName>PowerToys.$(ProjectName)</TargetName>
-    <OutDir>$(SolutionDir)..\..\$(Platform)\$(Configuration)\Tools\</OutDir>
+    <OutDir>$(RepoRoot)$(Platform)\$(Configuration)\Tools\</OutDir>
   </PropertyGroup>
   <ImportGroup Label="ExtensionSettings">
   </ImportGroup>
@@ -63,7 +63,7 @@
     <ClInclude Include="Package.h" />
     <ClInclude Include="ReportGPOValues.h" />
     <ClInclude Include="ReportMonitorInfo.h" />
-    <ClInclude Include="..\..\..\common\utils\json.h" />
+    <ClInclude Include="$(RepoRoot)src\common\utils\json.h" />
     <ClInclude Include="RegistryUtils.h" />
     <ClInclude Include="resource.h" />
     <ClInclude Include="XmlDocumentEx.h" />
@@ -85,4 +85,4 @@
     <Error Condition="!Exists('..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([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'))" />
   </Target>
-</Project>
+</Project>