Inconsistent `ast.parse` result for `python<3.11` and PEP654

[sobolevn]

PEP654 introduced exception groups and except* in python3.11
Link: https://peps.python.org/pep-0654/

Right now it is possible to parse except* with older ast.parse(..., feature_version=(3, 10)).
Example:

>>> import ast
>>> code = '''
... try:
...   ...
... except* Exception:
...   ...
... '''
>>> 
>>> ast.parse(code)
<ast.Module object at 0x10c685410>
>>> ast.parse(code, feature_version=(3, 8))
<ast.Module object at 0x10c685280>
>>> 

Which is not correct.

But, unlike #96427 it is very simple to fix. And I belive it should be fixed.

I've already applied a patch and will send it shortly after :)

[pablogsal]

Thanks for the PR!

[iritkatriel]

This is resolved now, right?