[clang] [clang][driver] Add \<executable\>/../include/c++/v1 to include path on Darwin (PR #70817)

[Liviu Ionescu via cfe-commits]

ilg-ul wrote:

I opened https://github.com/llvm/llvm-project/pull/72924 to fix this bug.

https://github.com/llvm/llvm-project/pull/70817