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/modules/MouseUtils/FindMyMouse/FindMyMouse.vcxproj

@@ -54,7 +54,7 @@
 
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup>
-    <OutDir>..\..\..\..\$(Platform)\$(Configuration)\</OutDir>
+    <OutDir>$(RepoRoot)$(Platform)\$(Configuration)\</OutDir>
     <TargetName>PowerToys.FindMyMouse</TargetName>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)'=='Debug'">
@@ -102,7 +102,7 @@
   <ItemDefinitionGroup>
     <ClCompile>
       <!-- Add Generated Files folder so #include <winrt/...> finds projected headers -->
-      <AdditionalIncludeDirectories>$(GeneratedFilesDir);$(SolutionDir)src\;$(SolutionDir)src\modules;$(SolutionDir)src\common\Telemetry;$(MSBuildThisFileDirectory)..\..\..\..\src\;$(MSBuildThisFileDirectory)..\..\..\..\src\modules;$(MSBuildThisFileDirectory)..\..\..\..\src\common\Telemetry;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(GeneratedFilesDir);$(RepoRoot)src\;$(RepoRoot)src\modules;$(RepoRoot)src\common\Telemetry;$(MSBuildThisFileDirectory)..\..\..\..\src\;$(MSBuildThisFileDirectory)..\..\..\..\src\modules;$(MSBuildThisFileDirectory)..\..\..\..\src\common\Telemetry;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemGroup>
@@ -123,10 +123,10 @@
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\..\common\logger\logger.vcxproj">
+    <ProjectReference Include="$(RepoRoot)src\common\logger\logger.vcxproj">
       <Project>{d9b8fc84-322a-4f9f-bbb9-20915c47ddfd}</Project>
     </ProjectReference>
-    <ProjectReference Include="..\..\..\common\SettingsAPI\SettingsAPI.vcxproj">
+    <ProjectReference Include="$(RepoRoot)src\common\SettingsAPI\SettingsAPI.vcxproj">
       <Project>{6955446d-23f7-4023-9bb3-8657f904af99}</Project>
     </ProjectReference>
   </ItemGroup>
@@ -153,5 +153,5 @@
   </Target>
 
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <Import Project="..\..\..\..\deps\spdlog.props" />
+  <Import Project="$(RepoRoot)deps\spdlog.props" />
 </Project>