Bum-burn wound chance should scale with satiations

[SnuggleSnail]

Contemplating hunger from last time, we came up with a less invasive change that we thought we could try, thus: Hunger now scales with satiations. I.e., if you are down to 0% satiation in a particular foodgroup, you will not gain either hunger or FEPs from eating it. This should resolve at least the miner complaint about not being able to eat for energy with some ease. Not sure this makes sense lore wise, but it might make mechanical sense. You are not punished in terms of hunger for eating at lower satiation levels.

Could we have bum-burn scale similarly with satiations, so I can get the same benefit from using it at low sats as high sats