_Py_RefcntAdd doesn't respect immortality #104142
Description
This is used by list and tuple internally:
>>> import sys
>>> sys.getrefcount(None) == (1 << 32) - 1
True
>>> refs = [None] * 42
>>> sys.getrefcount(None) == (1 << 32) - 1
False
>>> del refs
>>> sys.getrefcount(None) == (1 << 32) - 1
TrueI'll have a PR up in a bit.
CC: @ericsnowcurrently, @eduardo-elizondo