[clang] [clang-tools-extra] [libcxx] [clang] improved preservation of template keyword (PR #133610)

[Matheus Izvekov via cfe-commits]

mizvekov wrote:

@alexfh the last one will be fixed here: https://github.com/llvm/llvm-project/pull/135067

https://github.com/llvm/llvm-project/pull/133610