[clang] [Clang][WIP][RFC] Bypass TAD during overload resolution if a perfect match exists (PR #133426)

[via cfe-commits]

cor3ntin wrote:

I'd love feedback on the general design but I'll do a lot of code changes/renames/commenting/testing/etc so no need to nitpick (yet!)

https://github.com/llvm/llvm-project/pull/133426