readd beacon effect cause

paper-server/patches/sources/net/minecraft/server/commands/LootCommand.java.patch

@@ -1,10 +0,0 @@
---- a/net/minecraft/server/commands/LootCommand.java
-+++ b/net/minecraft/server/commands/LootCommand.java
-@@ -395,6 +_,7 @@
- 
-     private static int dropInWorld(CommandSourceStack source, Vec3 pos, List<ItemStack> items, LootCommand.Callback callback) throws CommandSyntaxException {
-         ServerLevel level = source.getLevel();
-+        items.removeIf(ItemStack::isEmpty); // CraftBukkit - SPIGOT-6959 Remove empty items for avoid throw an error in new EntityItem
-         items.forEach(itemStack -> {
-             ItemEntity itemEntity = new ItemEntity(level, pos.x, pos.y, pos.z, itemStack.copy());
-             itemEntity.setDefaultPickUpDelay();