Fix npc butchering

[x-qq]

Summary

Bugfixes "Fix NPC butchering requirements"

Purpose of change

Fixes #41814

Problem: NPCs consider any corpse over small size (46.25L) as large and require a nearby butchering rack and a table to process it.

Describe the solution

Solution: only require a rack for corpses size above creature_size::medium, and do not require a table as this requirement is neither communicated nor makes any sense.

Describe alternatives you've considered

Not doing this.

Testing

I've built this and tested it, ordering an NPC to butcher some medium and large corpses. It worked as expected.

Additional context

[CLIDragon]

I could be wrong but doesn't the player require a clean surface for butchering large corpses?

[RenechCDDA]

can_do_activity_there and butcher_corpse_activity are not used by the player? This should be resolved if that is the case, but otherwise it seems you are also changing the player's ability to butcher.

[x-qq]

can_do_activity_there and butcher_corpse_activity are not used by the player? This should be resolved if that is the case, but otherwise it seems you are also changing the player's ability to butcher.

The player's requirements are not changed. Here is what happens when a butchery of a large corpse (pig) is attempted by the player:

I could be wrong but doesn't the player require a clean surface for butchering large corpses?

Does not look like it from the above screenshot.

[CLIDragon]

Does not look like it from the above screenshot.

Must have been a memory from an older version then. In that case, I suspect that NPCs requiring a table was a holdover from the older version where players also required one.

[Maleclypse]

Compiled and tested against current build no change to PC butchering. Thanks for your contribution!