[3.12] gh-125984: fix use-after-free on fut->fut_{callback,context}0
due to an evil loop.__getattribute__
(GH-126003)
#126044
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(cherry picked from commit f819d43)
Co-authored-by: Bénédikt Tran [email protected]
fut->fut_{callback,context}0
with evil__getattribute__
in_asynciomodule.c
#125984