Cushions are missing from the list of block tags that cats can sit on

Issue: Cats can currently randomly sit on beds, chests, and furnaces. When placing a cushion in front of a cat they do not randomly try to sit on it.

Inference: Cats are not supposed to sit on cushions and this is working as intended, or someone forgot that cats like to randomly sit on comfy cushions and did not add cushions to the list of blocks that cats randomly like to sit on.

Solution: Add cushions to the list of blocks cats randomly sit on, or state that it is working as intended to prevent cats from randomly sitting on cushions.