[clang-tools-extra] [clang-tidy] fix false-positives for templates in `bugprone-return-const-ref-from-parameter` (PR #90273)

[Danny Mösch via cfe-commits]

SimplyDanny wrote:

> Do we add `improvement` documentation for checks that landed in the same release cycle?

I don't think that's needed.

https://github.com/llvm/llvm-project/pull/90273