Return 0 if null for FireworkMeta (#8738)

patches/server/0957-Return-0-by-default-for-FireworkMeta.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
+Date: Thu, 29 Dec 2022 11:16:05 -0500
+Subject: [PATCH] Return 0 by default for FireworkMeta
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaFirework.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaFirework.java
+index 907b016d3d7b4c756fa0ca75fb92d86b2e9bde1c..66e8863c0e60771719b8cf4f54a4e362943d7a42 100644
+--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaFirework.java
++++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaFirework.java
+@@ -389,7 +389,7 @@ class CraftMetaFirework extends CraftMetaItem implements FireworkMeta {
+ 
+     @Override
+     public int getPower() {
+-        return this.power;
++        return java.util.Objects.requireNonNullElse(this.power, 0); // Paper
+     }
+ 
+     @Override