Function arm_park_wake 

pub(super) fn arm_park_wake(
    wakes: &mut BinaryHeap<Reverse<(Instant, Destination)>>,
    dest: Destination,
    until: u64,
)

Wake a destination holding only parked rooms when its earliest park expires.

Unlike a retry timer, it is not jittered, and it is skipped when a wake for the destination is already armed to fire no later.