Right now, ApiCompat detects breaking changes on adding new [ModelReaderWriterBuildableAttribute] comparing to previous GA release version, which should not be a breaking change.

The repro step is to add a new attribute to the GA MRWContext and then dotnet build.

So, we have to ignore this attribute for ApiCompat for now.
We need to fix this to avoid removing [ModelReaderWriterBuildableAttribute] from GA version.