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

[Dmitry Vasilyev via llvm-commits]

slydiman wrote:

Note [lldb-x86_64-debian](https://lab.llvm.org/buildbot/#/builders/162) and [lldb-aarch64-windows](https://lab.llvm.org/buildbot/#/builders/141) did not fail because used gcc and msvc to build lldb. But failed lldb tests required clang. I will test this patch on the environment similar to [lldb-remote-linux-win](https://lab.llvm.org/buildbot/#/builders/197).

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