[clang] [clang] fix P3310 overload resolution flag propagation (PR #125372)

[Matheus Izvekov via cfe-commits]

mizvekov wrote:

> well

Thanks, I won't be able to for the next few hours. If it's not trivial to fix, please go ahead and revert.

https://github.com/llvm/llvm-project/pull/125372