[clang] [clang-tools-extra] [llvm] Reland: [clang] Improved canonicalization for template specialization types (PR #135414)

[Dmitry Vasilyev via cfe-commits]

slydiman wrote:

> I still wish I could test lldb locally. I will keep trying.

Please note lldb uses the system's `debugserver` on macOS. But on other systems (Linux, Windows) it uses its own lldb-server. You may not be able to reproduce the problem on macOS.

https://github.com/llvm/llvm-project/pull/135414