Exclude payload_stop MQTT cover gate

I have a swing gate opener with one input button. Pressing the button makes open, stop, close, stop in sequence. I added an MQTT switch to it. The cover device-class ads 3 buttons: open, close, stop. How can I avoid the stop button from the entity? My current code in cover.yaml:

  - platform: mqtt
    unique_id: gate-open
    name: "Gate open"
    command_topic: "/dingtian/relay4966/in/control"
    state_topic: "/dingtian/relay4966/out/r5"
    availability:
      - topic: "/dingtian/relay4966/out/lwt_availability"
        payload_available: "online"
        payload_not_available: "offline"
    payload_open: 'ON'
    payload_close: 'ON'
    state_open: "ON"
    state_closed: "OFF"
    device_class: gate