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

[Ian Anderson via cfe-commits]

ian-twilightcoder wrote:

@ilya-biryukov can you check that this fixes your running out of source location space problem please?

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