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

macOS (free-threading) / build and test (macos-26) build: https://github.com/python/cpython/actions/runs/34757893189/job/103725487469?pr=157417

FAIL: test_detach_materialized_dict_no_memory (test.test_class.TestInlineValues.test_detach_materialized_dict_no_memory)
----------------------------------------------------------------------
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

Linked PRs

• gh-157444

Comienza con test.test_class.TestInlineValues.test_detach_materialized_dict_no_memory y la ejecución de CI de macOS free-threading enlazada. Reproduce el fallo en la compilación macOS-26 free-threading y, después, inspecciona la aserción del subproceso de que el diccionario no se había borrado. Se considera terminado cuando el test ya no falla aleatoriamente en esa configuración de CI.