[clang] [clang][deps] Properly capture the global module and '\n' for all module directives (PR #148685)

[Michael Spencer via cfe-commits]

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

This looks good to me, but I'd also like @yronglin to take a look since it interacts with their patch.

https://github.com/llvm/llvm-project/pull/148685