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

[Matheus Izvekov via cfe-commits]

mizvekov wrote:

Ack, I see. I will try to reduce this example further.

It's not likely I will have a solution in less than 2 hours this time due to personal commitments, so feel free to revert if this is blocking you.

In any case I will pick this up tomorrow.

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