[clang] [clang-tools-extra] [lldb] Reland: [clang] preserve class type sugar when taking pointer to member (PR #132401)

[Matheus Izvekov via cfe-commits]

mizvekov wrote:

Okay, if the problem is an uninitialized source location somewhere, then that patch doesn't help at all.

https://github.com/llvm/llvm-project/pull/132401