fix: send full EquipmentMode packet for 3D equipment rendering

- Add MsgItem.CreateEquipmentMode() with all 14 equipment type IDs at offsets 35-87

- Send EquipmentMode after MsgItemInfo in EquipItem for visual refresh

- Send EquipmentMode after UnequipItem action to clear slot visuals

- Send EquipmentMode in Hotkeys handler after LoadEquips for login flow