Initially I just planned to get rid of PyLong_AS_LONG (undocumented transitional alias of PyLong_AsLong) in Objects/unicodeobject.c. But I have used opportunity to add few optimizations in the nearby code. I do not expect significant performance boost, but some overhead was removed in specific corner cases:

• PyLong_AsLongAndOverflow is now only called once for the replacement code (PyLong_AS_LONG was called twice).
• Using PyMapping_GetOptionalItem instead of PyObject_GetItem allows to avoid raising a KeyError if the translation table is a dict. I left this case in previous round (Add PyMapping_GetOptionalItem() #106307) because this does not make the code simpler (we still need to handle other LookupError), but it still has a tiny performance benefit.

Linked PRs

• gh-122561: Clean up and microoptimize str.translate and charmap codec #122932