React to NuGet package pruning warnings (#18304)

Contributes to dotnet/sdk#46642

NuGet added a new feature that automatically prunes package and project references that are provided by the shared framework that is targeted.

Author: ViktorHofer

eng/Versions.props

@@ -87,7 +87,6 @@
     <SystemReflectionMetadataVersion>$(SystemPackageVersionVersion)</SystemReflectionMetadataVersion>
     <SystemRuntimeCompilerServicesUnsafeVersion>6.1.0</SystemRuntimeCompilerServicesUnsafeVersion>
     <SystemThreadingTasksDataflow>$(SystemPackageVersionVersion)</SystemThreadingTasksDataflow>
-    <SystemValueTupleVersion>4.5.0</SystemValueTupleVersion>
     <MicrosoftDiaSymReaderPortablePdbVersion>1.6.0</MicrosoftDiaSymReaderPortablePdbVersion>
     <!-- Versions for package groups -->
     <RoslynVersion>4.11.0-2.24264.2</RoslynVersion>

src/fsc/fsc.targets

@@ -45,13 +45,16 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.Build.Framework" Version="$(MicrosoftBuildFrameworkVersion)" />
+    <PackageReference Include="Microsoft.Build.Tasks.Core" Version="$(MicrosoftBuildTasksCoreVersion)" />
+    <PackageReference Include="Microsoft.Build.Utilities.Core" Version="$(MicrosoftBuildUtilitiesCoreVersion)" />
+  </ItemGroup>
+
+  <ItemGroup Condition="'$(TargetFrameworkIdentifier)' != '.NETCoreApp'">
     <PackageReference Include="System.Diagnostics.DiagnosticSource" Version="$(SystemDiagnosticsDiagnosticSourceVersion)" />
     <PackageReference Include="System.Memory" Version="$(SystemMemoryVersion)" />
     <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="$(SystemRuntimeCompilerServicesUnsafeVersion)" />
     <PackageReference Include="System.Reflection.Metadata" Version="$(SystemReflectionMetadataVersion)" />
-    <PackageReference Include="Microsoft.Build.Framework" Version="$(MicrosoftBuildFrameworkVersion)" />
-    <PackageReference Include="Microsoft.Build.Tasks.Core" Version="$(MicrosoftBuildTasksCoreVersion)" />
-    <PackageReference Include="Microsoft.Build.Utilities.Core" Version="$(MicrosoftBuildUtilitiesCoreVersion)" />
   </ItemGroup>
 
 </Project>