Properly implemented weighted random spawning. Previously, it would only
sample a very small subset of all possible cow fluids and just return
the first fluid entry if it didn't find a spawnable entry amongst that
set, no matter if that default fluid could be spawned or not. It now
always random rolls amongst all spawnable fluids, this covers the corner
case of very few enabled fluids amongst a large possible total set.
Properly implemented weighted random spawning. Previously, it would only sample a very small subset of all possible cow fluids and just return the first fluid entry if it didn't find a spawnable entry amongst that set, no matter if that default fluid could be spawned or not. It now always random rolls amongst all spawnable fluids, this covers the corner case of very few enabled fluids amongst a large possible total set.