Protect against allay pickups and modification.

Closes #1923.

Author: wizjany

worldguard-bukkit/src/main/java/com/sk89q/worldguard/bukkit/listener/EventAbstractionListener.java

@@ -113,6 +113,7 @@
 import org.bukkit.event.entity.EntityDeathEvent;
 import org.bukkit.event.entity.EntityExplodeEvent;
 import org.bukkit.event.entity.EntityInteractEvent;
+import org.bukkit.event.entity.EntityPickupItemEvent;
 import org.bukkit.event.entity.EntityTameEvent;
 import org.bukkit.event.entity.EntityUnleashEvent;
 import org.bukkit.event.entity.ExpBottleEvent;
@@ -919,6 +920,12 @@ public void onPlayerPickupItem(PlayerPickupItemEvent event) {
         pickupDebounce.debounce(event.getPlayer(), item, event, new DestroyEntityEvent(event, create(event.getPlayer()), event.getItem()));
     }
 
+    @EventHandler(ignoreCancelled = true)
+    public void onEntityPickupItem(EntityPickupItemEvent event) {
+        Item item = event.getItem();
+        pickupDebounce.debounce(event.getEntity(), item, event, new DestroyEntityEvent(event, create(event.getEntity()), event.getItem()));
+    }
+
     @EventHandler(ignoreCancelled = true)
     public void onPlayerDropItem(PlayerDropItemEvent event) {
         Events.fireToCancel(event, new SpawnEntityEvent(event, create(event.getPlayer()), event.getItemDrop()));

worldguard-bukkit/src/main/java/com/sk89q/worldguard/bukkit/util/Entities.java

@@ -19,6 +19,7 @@
 
 package com.sk89q.worldguard.bukkit.util;
 
+import org.bukkit.entity.Allay;
 import org.bukkit.entity.Ambient;
 import org.bukkit.entity.ArmorStand;
 import org.bukkit.entity.Arrow;
@@ -218,6 +219,7 @@ public static boolean isConsideredBuildingIfUsed(Entity entity) {
         return entity instanceof Hanging
                 || entity instanceof ArmorStand
                 || entity instanceof EnderCrystal
+                || entity instanceof Allay
                 || entity instanceof Minecart && entity instanceof InventoryHolder;
     }