[3.13] gh-125966: fix use-after-free on fut->fut_callback0
due to an evil callback's __eq__
in asyncio (GH-125967)
#126047
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(cherry picked from commit ed5059e)
Co-authored-by: Bénédikt Tran 10796600+picnixz@users.noreply.github.com
fut->fut_callback0
with evil__eq__
in_asynciomodule.c
#125966