[clang] [clang][UBSan] Make sure that the implicit-conversion group is compatible with minimal runtime (PR #114865)

[Axel Lundberg via cfe-commits]

Zonotora wrote:

@vitalybuka This is connected to https://github.com/llvm/llvm-project/pull/75481 that was merged a couple of months ago..

https://github.com/llvm/llvm-project/pull/114865