[llvm-branch-commits] [clang] release/21.x: [clang] Allow trivial pp-directives before C++ module directive (#153641) (PR #154077)

[Erich Keane via llvm-branch-commits]

https://github.com/erichkeane approved this pull request.

I'm convinced we need it, and the patch is low enough risk, I say ship it.

https://github.com/llvm/llvm-project/pull/154077