[clang] [libcxx] [clang] Preserve Qualifiers and type sugar in TemplateNames (PR #93433)

[Matheus Izvekov via cfe-commits]

mizvekov wrote:

@pcc https://github.com/llvm/llvm-project/pull/93926 should fix it, can you double check that it gets all issues?

https://github.com/llvm/llvm-project/pull/93433