pylint #70127 unused import reported in case of __all__ reexport [open]

if some moduleimport something only to reexport it through __all__ magic, pylint reports that as unused import.

Reproduced by this small test case :

$ cat
pylint reports 'match' as unused import, whereas this
is actually reexported through __all__ magic...

from re import match
__all__ = ["match"]

done in<not specified>
closed by<not specified>