[clang] [clang][Sema] Skip the RequiresExprBodyDecls for lambda dependencies (PR #83997)

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alexfh wrote:

Hi folks, we've started seeing "implicit instantiation of undefined template" compilation errors after this commit. In all cases code used to compile fine before this commit. I haven't spotted any particular issues in the code (though the examples are looked at are rather convoluted, thus, I'm not 100% sure). I'll try to prepare a self-sufficient test case.

Was this sort of a behavior change expected?

https://github.com/llvm/llvm-project/pull/83997