[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)

[Rajveer Singh Bharadwaj via cfe-commits]

Rajveer100 wrote:

@Sirraide The tests pass, not sure about the failure though.

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