Enable to load grid2op data with pickle

[marota]

Environment

• Grid2op version: 1.7.2
• System: ubuntu20.04, ...

Bug description

From grid2op version 1.7.1, trying in grid2viz to load with pickle a "dill" dump of grid2op data fails and return "AttributeError: type object 'ActionWCCI2022_input_data_test' has no attribute 'process_grid2op_shunt_data". Works in 1.7.0

Is there a typo in "process_grid2op_shunt_data" here https://github.com/rte-france/Grid2Op/blob/51854262d02d96c1ee1798a78a86661d1ff971a1/grid2op/Space/GridObjects.py#L3742 ? As the method does not seem to exist in grid2op package, but "process_shunt_data" exists. Replacing by "process_shunt_data" does not raise the error anymore and let the loading with pickle runs fine.

How to reproduce

Code snippet

import grid2op

... # Some code 
import pickle
import gzip
pickle.load(gzip.open("pathTo/maze-rl_only_topo_2050-01-10_1.dill.bz", "rb"))

Here is the file to unzip to reproduce it
maze-rl_only_topo_2050-01-10_1.zip

[BDonnot]

Duplicate of #365