Aftershock butcher fixes

[RoyalFox2140]

SUMMARY: [Bugfixes] "Fixes invalid harvest targets in uplifted Aftershock animals"

Purpose of change

The uplifted animals from Aftershock had invalid harvests, and butchered into nothing. This replaces those with their mammal equivalents.

Describe the solution

I replaced demihuman_fur and demihuman_large_fur with mammal_fur and mammal_large_fur to make them have a valid harvest target, so butchery could work.

Describe alternatives you've considered

Demihuman seems to imply they are closer to human, so maybe it should be cannibalism. I see no reason why it would be considered cannibalism however, an uplifted bear is still a bear. An uplifted monkey is more questionable and maybe that one could be close enough to cannibalism.

Testing

I changed the JSON, launched the game with it, and butchered the 3 animals in question. No crashes, butchery worked.

Additional context

Aftershock is pain.

[Maleclypse]

For this to actually work as intended you'd need to port over Strict Humanism from DDA.

[RoyalFox2140]

For this to actually work as intended you'd need to port over Strict Humanism from DDA.

As humans already eat monkeys and a number of other animals such as dolphins, I see no compelling reason to feel bad about it or a significant enough difference in these humanoid bears and more human monkeys. If someone wants to port Strict Humanitarian after this PR they can, but vegetarian already covers feeling bad about eating animals.

It's also out of my abilities as a JSON edit.

[chaosvolt]

Personally I'd just lump mutant humanoid meat under the effects of Cannibal and Psychopath rather than creating a trait just for a fairly narrow range of comestibles.