Turn off assert for free-threading

Author: markshannon

Objects/object.c

@@ -2994,7 +2994,11 @@ _Py_Dealloc(PyObject *op)
     destructor dealloc = type->tp_dealloc;
 #ifdef Py_DEBUG
     PyThreadState *tstate = _PyThreadState_GET();
+#ifndef Py_GIL_DISABLED
+    /* This assertion doesn't hold for the free-threading build, as
+     * PyStackRef_CLOSE_SPECIALIZED is not implemented */
     assert(tstate->current_frame == NULL || tstate->current_frame->stackpointer != NULL);
+#endif
     PyObject *old_exc = tstate != NULL ? tstate->current_exception : NULL;
     // Keep the old exception type alive to prevent undefined behavior
     // on (tstate->curexc_type != old_exc_type) below