Update to .NET 10

[wtgodbe]

Follow steps in https://github.com/dotnet/aspnetcore/blob/main/docs/UpdatingMajorVersionAndTFM.md

• Update branding: Update branding to 10.0 #57340
  • Turn GRPC & HttpSys Microbenchmark validation back on
• Update TFM after runtime updates theirs: [main] Update dependencies from dotnet/efcore, dotnet/runtime #58090
• Use a .NET10 SDK - Update global.json to 10.0 sdk #58425
• Mark API from 9.0 as shipped
  • release/9.0: [release/9.0] Mark API from 9 as shipped #58060
  • main: Mark API from 9 as shipped #58897

After RTM ships:

• Add 9.0 SiteExtensions package to main - Add 9.0 SiteExtension, remove some 6.0 bits #58925
• Update package baseline - Update package baseline for 9.0 #58924
• Add PackageOverrides.txt, PlatformManifest.txt to 9.0

[wtgodbe]

Done