[TSP] Pyrefly as a TSP server is not returning the correct MRO list for a unittest.TestCase

1. Clone django 2. Setup a venv with the requirements 3. Change Pylance to use pyrefly as the diagnostics source 4. Open tests\basic\tests.py and try to goto def on a self.assertEqual function for a test case. Expected result: It finds the assertEqual on unittest.testcase Actual result: No definition found