Do a comparison on user.profile to verify it's not None.

This assert shouldn't matter as user.profile should trigger an
exception. However, there are cases with py3.10 and Django 4.2
that aren't raising the exception as desired.

tests/test_authentication.py

@@ -320,7 +320,7 @@ def test_extended_model_claim_mapping_missing_instance(self):
             self.assertEqual(user.last_name, "Doe")
             self.assertEqual(user.email, "[email protected]")
             with self.assertRaises(ObjectDoesNotExist):
-                user.profile  # noqa
+                self.assertIsNone(user.profile)
 
     @mock_adfs("2016")
     def test_extended_model_claim_mapping(self):