Remove [the warning suppression](https://github.com/dotnet/extensions/blob/c4e57fb1e6b8403a527ea3cd737f1146dcbc1f31/src/Generators/Shared/GeneratorUtilities.cs#L39) in GeneratorUtilities.cs, see https://github.com/dotnet/extensions/pull/6623#discussion_r2377010707.
Remove the warning suppression in GeneratorUtilities.cs, see #6623 (comment).