[OPEN] NPC Sims drop everything to shovel snow piles

@siirysiir I think the problem is due to the lack of things for sims to do and the way their AI is programed, they are programmed to look for every interactable object in the neighbourhood and from a score of 0-10 will decide how "important" it is and will there for pick a number based on that which determines if they'll perform the interaction. It's why sims will randomly strike up conversations w/o being introduced, because the AI interprets other sims as objects, rather than sims.