[3.13] gh-109746: Fix race condition in test_start_new_thread_failed (GH-127299) - #127323

[3.13] gh-109746: Fix race condition in test_start_new_thread_failed (GH-127299)#127323

serhiy-storchaka merged 2 commits into

python:3.13python/cpython:3.13from

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