[clang] [Modules] Fix an identifier hiding a function-like macro definition. (PR #135471)

[Volodymyr Sapsai via cfe-commits]

vsapsai wrote:

> Thanks! Does the pr fix https://bugs.llvm.org//show_bug.cgi?id=32670

Nope. The test case in #32017 is still failing. I believe it is a different issue as we don't have any identifiers with the same names as macros. And seems like the behavior wasn't affected by d79514e24b4da111b6b08535f975ae8f4d81c26d (aka r259901) while #32040 was exposed by that change.

https://github.com/llvm/llvm-project/pull/135471