Move runtime override to tests (#34535)

Author: AndriySvyryd

Diff for: Directory.Build.targets

@@ -11,13 +11,6 @@
 
   <Import Project="Sdk.targets" Sdk="Microsoft.DotNet.Arcade.Sdk" />
   <Import Project="eng\testing\linker\trimmingTests.targets" Condition="'$(IsPublishedAppTestProject)' == 'true'" />
-  
-  <ItemGroup>
-    <FrameworkReference Update="Microsoft.NETCore.App"
-                        Condition="'$(TargetFramework)' == 'net9.0' and '$(StabilizePackageVersion)' != 'true'"
-                        RuntimeFrameworkVersion="$(MicrosoftNETCoreAppRuntimewinx64Version)"
-                        TargetingPackVersion="$(MicrosoftNETCoreAppRefVersion)" />
-  </ItemGroup>
 
   <Target Name="GetCustomAssemblyAttributes"
           BeforeTargets="GetAssemblyAttributes"

Diff for: test/Directory.Build.props

@@ -8,4 +8,11 @@
     <DefaultNetCoreTargetFramework>net9.0</DefaultNetCoreTargetFramework>
   </PropertyGroup>
 
+  <ItemGroup>
+    <FrameworkReference Update="Microsoft.NETCore.App"
+                        Condition="'$(TargetFramework)' == '$(DefaultNetCoreTargetFramework)'"
+                        RuntimeFrameworkVersion="$(MicrosoftNETCoreAppRuntimewinx64Version)"
+                        TargetingPackVersion="$(MicrosoftNETCoreAppRefVersion)" />
+  </ItemGroup>
+
 </Project>