[ * ] This PR has been tested locally
Fix issue #1298, which is caused because the function on_metadata_inventory_put is called after the items are placed, however the stack is not updated, and is hence the items in the position gets reset to stack. Thereby not merging with existing items already present in that position.
on_metadata_inventory_putis called after the items are placed, however thestackis not updated, and is hence the items in the position getsresetto stack. Thereby not merging with existing items already present in that position.