Fix nested beehive coordinate filtering

[yesidodo73]

Fixed beehive coordinate filtering being skipped for some inventory and nested container items.

The WINDOW_ITEMS handler returned as soon as it encountered an empty slot. Since most inventories contain empty slots, any items after the first empty slot were never checked.

Coordinate data removed from beehives inside bundles or container items was also not propagated to the parent component. The nested item was modified, but the parent packet was not marked for re-encoding, so the original coordinate data could still be sent to the client.

The handler now skips empty slots instead of stopping the entire inventory scan, and propagates nested component changes so the updated item is written back and re-encoded.

Applied the same fix to both Folia and Legacy implementations.