[clang-tools-extra] [clang-tidy] do not diagnose array types within implicit instantiations of a template (PR #132924)

[St. Muench via cfe-commits]

stmuench wrote:

@vbvictor @5chmidti would you say it makes sense to cherry-pick these changes to branch `release/21.x`? If yes, could you maybe edit this PR's milestones?

https://github.com/llvm/llvm-project/pull/132924