[clang] [Frontend][PCH]-Add support for ignoring PCH options (-ignore-pch). (PR #142409)

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MaggieYingYi wrote:

> 
> https://www.sphinx-doc.org/en/master/usage/restructuredtext/basics.html
> 

Thanks for the information and suggestion. Although the error is not related with this PR, I have fixed by removing unnecessary spaces. Please see https://github.com/MaggieYingYi/llvm-project/commit/a3da3bc79589919840c93f4ccc0201a1b9027fb3 for the details. The document test passed [here](https://github.com/llvm/llvm-project/actions/runs/15414959825/job/43375483957?pr=142409) .


https://github.com/llvm/llvm-project/pull/142409