[clang] [Clang] Improve type traits recognition in `__has_builtin` (PR #111516)

[Erich Keane via cfe-commits]

https://github.com/erichkeane commented:

This seems reasonable to me.  Its a shame that TRANSFORM_TYPE_TRAIT_DEF can't be done in terms of TYPE_TRAIT, but otherwiseI think this is a good direction.

https://github.com/llvm/llvm-project/pull/111516