[clang] [clang-tools-extra] [lldb] Reland: [clang] preserve class type sugar when taking pointer to member (PR #132234)

[Matheus Izvekov via cfe-commits]

mizvekov wrote:

Yeah, clang side unchanged.

The lldb changed stuff is trivial, I don't think it's worth waiting a long time for lldb input.

https://github.com/llvm/llvm-project/pull/132234