Make Avalonia.Win32.Interoperability build again on CI

Backport of 691ff9f33a from #11488 to stable branch.

dirs.proj

@@ -18,7 +18,7 @@
     <ProjectReference Remove="src/iOS/**/*.*proj" />
     <ProjectReference Remove="samples/ControlCatalog.iOS/ControlCatalog.iOS.csproj" />
   </ItemGroup>
-  <ItemGroup Condition="!$([MSBuild]::IsOsPlatform('Windows')) OR '$(MSBuildRuntimeType)' != 'Full'">
+  <ItemGroup Condition="!$([MSBuild]::IsOsPlatform('Windows'))">
     <ProjectReference Remove="src/Windows/Avalonia.Win32.Interop/Avalonia.Win32.Interop.csproj" />
     <ProjectReference Remove="samples/interop/**/*.*proj" />
     <ProjectReference Remove="samples/ControlCatalog.Desktop/*.*proj" />