Drop and Inventroy System Fix

Inventory System

• Improved synchronization between the inventory, client, and GameServer.

• Fixed issues that could affect inventory behavior during extended farming sessions.

• Added additional safeguards against duplicate item pickup processing.

Drop System

• Fixed ghost drops where items remained visible on the ground but could no longer be picked up.

• Improved synchronization when picking up and removing dropped items.

• Optimized automatic cleanup of expired and orphaned ground items.

• Improved drop system stability during extended farming sessions.