Fix container close packets using id 0

The InventoryCloseEvent is fired in ServerPlayer#closeContainer before the container close packet is sent. However, InvUI's CustomContainerMenu#handleClosed unsets the active container menu while handling the event. This results in a close packet with id 0 being sent.

Author: NichtStudioCode

invui/src/main/java/xyz/xenondevs/invui/internal/menu/CustomContainerMenu.java

@@ -351,8 +351,6 @@ public void handleClosed() {
             serverPlayer.inventoryMenu.setRemoteSlotUnsafe(9 + i, item);
         }
         serverPlayer.inventoryMenu.setRemoteSlotUnsafe(OFF_HAND_SLOT, remoteOffHand);
-        
-        serverPlayer.containerMenu = serverPlayer.inventoryMenu;
     }
 
     /**
@@ -402,6 +400,7 @@ private void handleClose(ServerboundContainerClosePacket packet) {
 
         if (getWindow().isCloseable()) {
             getWindowEvents().handleClose(InventoryCloseEvent.Reason.PLAYER);
+            serverPlayer.containerMenu = serverPlayer.inventoryMenu;
         } else {
             sendOpenPacket(title);
         }