Change for mob handling which picked up items. Now we will cache mobs in memory and will only check them instead of every monster with equipment. So pillagers, skeletons with bows and zombies with armors which they got from natural spawning will get removed, while any monster which picked up item, will remain, even if it's above allowed cap.
Renamed IgnoreEntityWithEquipment to IgnoreEntityWithPickedItem to better represent what it does now