gh-117657: Add TSAN suppression for set_default_allocator_unlocked

[aisk]

I'm using macOS 14.2 with x86_64 CPU, this race conflict always occurs on my local machine.

Clang version:

clang -v
Apple clang version 15.0.0 (clang-1500.3.9.4)
Target: x86_64-apple-darwin23.2.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

• Issue: Make TSAN tests pass with the GIL disabled in free-threaded builds #117657

[Fidget-Spinner]

There's quite a few socket races as well that pop up. We should add them to the suppressions.

[aisk]

I think we can enable the TSAN free-threads builds tests on macOS?

[aisk]

Tried to enable TSAN check on macOS #120502, but it will hang forever for the test_capi.test_mem test, and the set_default_allocator_unlocked race didn't get triggered...

https://github.com/python/cpython/actions/runs/9517250225/job/26235426291?pr=120502

---

Updated:

Sorry, my bad, the set_default_allocator_unlocked race did get triggered, but the races on socket didn't triggered. So I think we can continue with this change, and I will find a way to resolve the hang in another PR.

[miss-islington-app]

Thanks @aisk for the PR, and @Fidget-Spinner for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13.
🐍🍒⛏🤖

[bedevere-app]

GH-120510 is a backport of this pull request to the 3.13 branch.