Critical Dupe Fix, Shulkers graving (#4122)

Cancellig damage event on thrown item entities and removing them manually to avoid spilling shulker box content when it is destroyed by explosions.

plugins/paper/src/main/java/com/playmonumenta/plugins/listeners/GraveListener.java

@@ -187,6 +187,10 @@ public void entityDamage(EntityDamageEvent event) {
  // If a hoped item isn't put into a grave (because graves are disabled), cancel all non-void damage.
  event.setCancelled(true);
  entity.setInvulnerable(true); // also make the item invulnerable to prevent this event from being spammed
+ } else if (GraveManager.isThrownItem(entity)) {
+ // Cancel damage event, remove manually.
+ event.setCancelled(true);
+ entity.remove();
  }
  } else if (GraveManager.isGrave(event.getEntity())) {
  event.setCancelled(true);