[3.10] bpo-42540: reallocation of id_mutex should not force default allocator (GH-29564) #29599
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Unlike the other locks reinitialized by _PyRuntimeState_ReInitThreads,
the "interpreters.main->id_mutex" is not freed by _PyRuntimeState_Fini
and should not force the default raw allocator.
(cherry picked from commit 736684b)
Co-authored-by: Sam Gross colesbury@gmail.com
https://bugs.python.org/issue42540