Support pickle version 4 by adding missing ops (#90223)
Summary:
In this logic, we are traversing the entries to find the module for STACK_GLOBAL entries.
According to https://github.com/python/cpython/blob/2837241f22be33a5597707b2aa723cb2cf6f3967/Lib/pickletools.py#L1799 we need to look for GET, BINGET and LONG_BINGET.
So this diff updates that. Also while testing, I found some cases of empty modules, for cases such as tanh. For this I added the option to skip processing when this is the case.
Test Plan: Tested with f392778829
Differential Revision: D41748595
Pull Request resolved: https://github.com/pytorch/pytorch/pull/90223
Approved by: https://github.com/PaliC
