allow any number to be returned from __length_hint__ (closes #15354)

Objects/abstract.c

@@ -126,7 +126,7 @@ _PyObject_LengthHint(PyObject *o, Py_ssize_t defaultvalue)
         PyErr_Clear();
         return defaultvalue;
     }
-    rv = PyLong_Check(ro) ? PyLong_AsSsize_t(ro) : defaultvalue;
+    rv = PyNumber_Check(ro) ? PyInt_AsSsize_t(ro) : defaultvalue;
     Py_DECREF(ro);
     return rv;
 }