[clang] [clang][modules] HeaderSearch::MarkFileModuleHeader creates extra HeaderFileInfo, breaks PCM reuse (PR #89005)

[Jan Svoboda via cfe-commits]

jansvoboda11 wrote:

Just so you're aware, it's possible that https://github.com/llvm/llvm-project/pull/87848 introduced some unexpected behavior change. It would be good to check if your issues are caused just by one patch in isolation or by a combination of more patches that landed recently.

https://github.com/llvm/llvm-project/pull/89005