[repo] Move Microsoft.CSharp to non-prod section (#5581)

Author: reyang

Directory.Packages.props

@@ -15,7 +15,6 @@
     <PackageVersion Include="Grpc.Net.Client" Version="[2.52.0,3.0)" />
     <PackageVersion Include="Microsoft.AspNetCore.Http.Abstractions" Version="[2.1.1,6.0)" />
     <PackageVersion Include="Microsoft.AspNetCore.Http.Features" Version="[2.1.1,6.0)" />
-    <PackageVersion Include="Microsoft.CSharp" Version="[4.7.0]" />
 
     <!--
         Typically, for the Microsoft.Extensions.* packages relating to DI Abstractions, Hosting Abstractions, and Logging,
@@ -76,6 +75,7 @@
     <PackageVersion Include="Grpc.AspNetCore" Version="[2.59.0,3.0)" />
     <PackageVersion Include="Grpc.AspNetCore.Server" Version="[2.59.0, 3.0)" />
     <PackageVersion Include="Grpc.Tools" Version="[2.59.0,3.0)" />
+    <PackageVersion Include="Microsoft.CSharp" Version="[4.7.0]" />
     <PackageVersion Include="Microsoft.CodeAnalysis.PublicApiAnalyzers" Version="[3.11.0-beta1.23525.2]" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="[8.0.0,)" />
     <PackageVersion Include="Microsoft.Extensions.Hosting" Version="[8.0.0,)" />