Revert unrelated changes to global.json and Build.cmd

Co-authored-by: 333fred <[email protected]>

Author: Copilot

Build.cmd

@@ -16,4 +16,4 @@
     "Microsoft.DotNet.Helix.Sdk": "10.0.0-beta.25427.2",
     "Microsoft.Build.Traversal": "3.4.0"
   }
-}
+}