Fix async test_distance_to_arrival failing in ci

This fixes an async test error. This doesn't happen when test is run individually

https://api.github.com/alandtse/tesla/blob/e017a6d049a03d2df5afafa735ac10dd9b0c83f8/tests/test_sensor.py#L633

    await setup_platform(hass, SENSOR_DOMAIN)

    state = hass.states.get("sensor.my_model_s_distance_to_arrival")
    assert state
    assert state.state
    if state.state == "unknown":
        # TODO: Fix async test_distance_to_arrival failing in ci
        # This fixes an async test error. This doesn't happen when test is run individually
        return
    if state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == LENGTH_KILOMETERS:
        assert float(state.state) == round(
            DistanceConverter.convert(
                car_mock_data.VEHICLE_DATA["drive_state"][
                    "active_route_miles_to_arrival"
                ],
                LENGTH_MILES,
                LENGTH_KILOMETERS,
            ),
            2,
        )
    else:
        assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == LENGTH_MILES
        assert float(state.state) == round(
            car_mock_data.VEHICLE_DATA["drive_state"]["active_route_miles_to_arrival"],
            2,
        )

    assert state.attributes.get(ATTR_DEVICE_CLASS) == SensorDeviceClass.DISTANCE