[llvm] [compiler-rt] [mlir] [clang] [libcxx] [sanitizer] Skip /include/c++/ from summary (PR #78534)

[Sam James via cfe-commits]

thesamesam wrote:

Unfortunately, it's been a while since I've done Darwin (although may be doing a bit more soon), so no ideas for that side yet.

https://github.com/llvm/llvm-project/pull/78534