Fix AttributeError: 'VendorImporter' object has no attribute '_path' …

…in Python 3.12 for autogen_serialized_datamodel.py

Signed-off-by: Evan Blaudy <[email protected]>

src/py-opentimelineio/opentimelineio/console/autogen_serialized_datamodel.py

@@ -200,6 +200,7 @@ def _generate_model_for_module(mod, classes, modules):
             if (
                 inspect.ismodule(thing)
                 and thing not in modules
+                and "opentimelineio" in thing.__name__
                 and all(not thing.__name__.startswith(t) for t in SKIP_MODULES)
             )
         ),