[clang] [clang] Allow class with anonymous union member to be const-default-constructible even if a union member has a default member initializer (#95854) (PR #96301)

[Shafik Yaghmour via cfe-commits]

https://github.com/shafik commented:

I don't think the test failures look related to the changes can you push and empty change to see if rerunning the tests comes up clean?

https://github.com/llvm/llvm-project/pull/96301