ETA not shown correctly in RingdownCard

[fwextensions]

Looks like I didn't test #267 well enough. The ringdown card shows the "Arrived At" state even though it should still be in the ETA state:

These lines are just checking the Status.ARRIVED constant, so they'll always hit the first branch of the ternary:

        label={Status.ARRIVED ? 'Arrived At:' : 'ETA:'}
        time={Status.ARRIVED ? DateTime.fromISO(timestamps.ARRIVED) : etaDateTimeLocalObj}

This should do something like const hasArrived = currentDeliveryStatus === Status.ARRIVED and then check that value in the label and time fields.