[clang] [Clang] Implement P3034R1 Module Declarations Shouldn’t be Macros (PR #90574)

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https://github.com/cor3ntin approved this pull request.

LGTM. I think all the concerns have been addressed.

Give it until tomorrow before landing in case @ChuanqiXu9 @Bigcheese @AaronBallman have additional comments

Thanks a lot

https://github.com/llvm/llvm-project/pull/90574