Prohibit play as "Unnamed Soul"

[justinelai]

Related to #46

If someone playing the demo errors out and hard-refreshes too many times, the game will not initialize because they've invisibly accrued a long cooldown.

However, the map is still clickable, creating another error with room_id, which just leads to another hard refresh and ... you know the rest. At that point the user just needs to step AFK.

This would be partially fixed with visual indication/messaging of the cooldown. However, we could also prohibit clicking as the uninitialized/"Unnamed Soul".