[clang] [hwasan] Don't instrument when PGO profile is collected (PR #86739)

[Vitaly Buka via cfe-commits]

vitalybuka wrote:

> ah I see. I feel like this should be a more principled approach that other sanitizers also share, as you've mentioned as an alternative. do people not care about other sanitizers in production?

Actually Asan should not exhibit this behavior, by some lack it does not instrument PGO counters.

I will try generic approach by marking PGO as MD_nosanitize


https://github.com/llvm/llvm-project/pull/86739