[clang] [clang-format] Honor later negated .clang-format-ignore patterns (PR #195432)

[Björn Schäpers via cfe-commits]

HazardyKnusperkeks wrote:

> Thanks for the approval, I've squashed my commits and rebased on top of main - it seems like I don't have the neccessary rights to complete the PR(?) - so you might have to merge at your own discretion.
> 
> Thanks!

That was not necessary, that happens automatically on merge.

https://github.com/llvm/llvm-project/pull/195432