test_class.test_detach_materialized_dict_no_memory() fails randomly on the Free Threading macOS CI #157429

FAIL: test_detach_materialized_dict_no_memory (test.test_class.TestInlineValues.test_detach_materialized_dict_no_memory)
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test.support.isolation._RemoteTraceback: 
"""
Traceback (most recent call last):
  File "/Users/runner/work/cpython/cpython/Lib/test/support/__init__.py", line 1374, in internal
    return test(*args, **kwargs)
AssertionError: the dictionary was not cleared
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/Users/runner/work/cpython/cpython/Lib/test/support/__init__.py", line 1374, in internal
    return test(*args, **kwargs)
AssertionError: test failed in the subprocess