[clang] Reapply "[Clang][Sema] Refactor collection of multi-level template argument lists (#106585)" (PR #111173)

[Matheus Izvekov via cfe-commits]

mizvekov wrote:

FWIW https://github.com/llvm/llvm-project/commit/4336f00f2156970cc0af2816331387a0a4039317 does not really depend on this patch significantly, the same change more or less should work, you just need to adjust for the changes in the function signature.

https://github.com/llvm/llvm-project/pull/111173