[clang] [clang][Diagnostic] Don't warn about binary literals when using C23. (PR #80244)

[Shafik Yaghmour via cfe-commits]

https://github.com/shafik commented:

Thank you for this PR. This change should have some tests to verify the behavior is correct. I am a little surprised that this does not change any existing tests but maybe we don't have good test coverage.

https://github.com/llvm/llvm-project/pull/80244