Enable various types of interaction to return items to the player, without needing to have a bunch of boilerplate creative mode and held item checks

it became glaringly obvious that this was needed because of #4827 and #4868.

this is further needed with the addition of cauldrons.

src/block/ShulkerBox.php

@@ -97,7 +97,7 @@ class ShulkerBox extends Opaque{
 		return $result;
 	}
 
-	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
+	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null, array &$returnedItems = []) : bool{
 		if($player instanceof Player){
 
 			$shulker = $this->position->getWorld()->getTile($this->position);