[clang] [compiler-rt] [clang][UBSan] Add implicit conversion check for bitfields (PR #75481)

[Aaron Ballman via cfe-commits]

https://github.com/AaronBallman approved this pull request.

LGTM, so long as @rjmccall or @efriedma-quic don't have concerns about codegen changes. Please give them a few days to chime in before landing.

https://github.com/llvm/llvm-project/pull/75481