[issue43441] mutilcorevm: global variable next_version_tag cause method cache bug

[junyixie]

junyixie <xie.junyi at outlook.com> added the comment:

fix:
only main interpreter fini, clear method cache. 

void
_PyType_Fini(PyInterpreterState *interp)
{
    if (_Py_IsMainInterpreter(interp)) {
        clear_slotdefs();
        _PyType_ClearCache(&interp->type_cache);
    }
}

when python4.0? type isolate, each interpreter dealloc should clear method cache.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43441>
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