JSON-ify sleep 2: Skeep No More

[phi2dao]

Summary

None

Purpose of change

While working on #75852 I noticed that you can try to fall asleep while floating in mid-air. This didn't seem intended, but it was out of scope for that PR, so I didn't do anything about it. I'm doing something about it now.

Describe the solution

I added an additional check to handle_action::sleep for the NO_FLOOR tag. You can no longer skeep (sky sleep) without valid comfort data, just like trying to sleep in DEEP_WATER.

Describe alternatives you've considered

Has anyone ever even tried to skeep? I'm pretty sure this PR is fixing a problem no one has actually had.

Testing

I gave myself MoM's levitation effect, flew up into the air, and tried to sleep. Before the change it let me, after the change it didn't.

Additional context

To skeep successfully, just add something like the following comfort data to a mutation:

"comfort": [
  {
    "conditions": [ { "type": "terrain", "flag": "NO_FLOOR" } ],
    "comfort": "very_comfortable"
  }
]

[Standing-Storm]

Considering the calorie cost of long-term Levitation, this is probably a good countermeasure to keep telekinetics from accidentally starving to death in their sleep.