Spoilage

Fixed stacking issue: spoilage NBT is now applied instantly when picking up items, preventing identical foods from merging into a single stack before spoilage is applied.

Reduced hand jitter: spoilage timer updates for items in hotbar/offhand are now 5 times less frequent (every 5 seconds instead of every second). The item still updates its NBT, but the visual flicker is significantly reduced. (I hope)