Flaky thread sanitizer tests

While working on the free threading build, we are increasing the Thread Sanitizer coverage of tests. We are trying not to add flaky tests, but some are likely to slip through.

If you see a spurious ThreadSanitizer test failure on GitHub on your PRs, please let us know by either filing an issue (with “topic-free-threading”) or by commenting here or on Discord in the #free-threading channel.

Thanks!

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I saw one yesterday. Next time I will let you know.

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Looks like a flake here: Draft: gh-129711: Reduce number of yield statements in json encoder · python/cpython@c547d6c · GitHub

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