fix: ecu_status: should use any_child_ecu_in_update flag instead of any_in_update to avoid self-lockedown, still wait on any_child_ecu_in_update before reboot

fix: ecu_status: should use any_child_ecu_in_update flag instead of any_in_update to avoid self-lockedown, still wait on any_child_ecu_in_update before reboot #796