SPIGOT-5948: EntityDropItemEvent does not fire when piglins drop an item

nms-patches/BehaviorUtil.patch

@@ -33,7 +33,19 @@
          double d0 = entityliving.getHeadY() - 0.30000001192092896D;
          EntityItem entityitem = new EntityItem(entityliving.world, entityliving.locX(), d0, entityliving.locZ(), itemstack);
          float f = 0.3F;
-@@ -76,7 +77,7 @@
+@@ -71,12 +72,19 @@
+         vec3d1 = vec3d1.d().a(0.30000001192092896D);
+         entityitem.setMot(vec3d1);
+         entityitem.defaultPickupDelay();
++        // CraftBukkit start
++        org.bukkit.event.entity.EntityDropItemEvent event = new org.bukkit.event.entity.EntityDropItemEvent(entityliving.getBukkitEntity(), (org.bukkit.entity.Item) entityitem.getBukkitEntity());
++        entityitem.world.getServer().getPluginManager().callEvent(event);
++        if (event.isCancelled()) {
++            return;
++        }
++        // CraftBukkit end
+         entityliving.world.addEntity(entityitem);
+     }
  
      public static SectionPosition a(WorldServer worldserver, SectionPosition sectionposition, int i) {
          int j = worldserver.b(sectionposition);