issue gh-153888: autospec doesn't work with lazy-imported symbols

[palakkhinvasara]

#153888 Fix unittest.mock.patch with lazy imports and autospec

unittest.mock.patch() currently reads unresolved lazy-import bindings directly from target.__dict__.

When autospec=True (and similarly spec/spec_set) is used with a lazy-imported object, patch() receives the LazyImportType proxy instead of the actual imported object. This causes create_autospec() to create a NonCallableMagicMock for callable objects.

For example:

lazy from json import dumps

with patch("__main__.dumps", autospec=True) as mock_dumps:
    mock_dumps({})

[palakkhinvasara]

hello @cjw296 , can you pls review this pr?

Thanks & Regards
Palak