[release/10.0.1xx] Source code updates from dotnet/dotnet (#51257)

Author: SimonZhao888

NuGet.config

@@ -3,6 +3,9 @@
   <packageSources>
     <clear />
     <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
+    <!--  Begin: Package sources from dotnet-dotnet -->
+    <add key="darc-pub-dotnet-dotnet-862de94" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-dotnet-862de94f/nuget/v3/index.json" />
+    <!--  End: Package sources from dotnet-dotnet -->
     <!--  Begin: Package sources from microsoft-testfx -->
     <!--  End: Package sources from microsoft-testfx -->
     <!--  Begin: Package sources from dotnet-aspire -->