Fix incorrect crafting result amount for fireworks (#9322)

Although vanilla does not specifically call this method anywhere, this fixes a bug where the result using the Bukkit API returns the wrong amount.

patches/server/0978-Fix-incorrect-crafting-result-amount-for-fireworks.patch

@@ -0,0 +1,20 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Redned <redned235@gmail.com>
+Date: Mon, 12 Jun 2023 11:54:12 -0500
+Subject: [PATCH] Fix incorrect crafting result amount for fireworks
+
+Although vanilla does not specifically call this method anywhere, this fixes a bug where the result using the Bukkit API returns the wrong amount.
+
+diff --git a/src/main/java/net/minecraft/world/item/crafting/FireworkRocketRecipe.java b/src/main/java/net/minecraft/world/item/crafting/FireworkRocketRecipe.java
+index 5296f47a7e344ac59664a48e8ce91240393c7e12..b611ce69defe0dfa69c43f138b20d107c3f46c05 100644
+--- a/src/main/java/net/minecraft/world/item/crafting/FireworkRocketRecipe.java
++++ b/src/main/java/net/minecraft/world/item/crafting/FireworkRocketRecipe.java
+@@ -82,7 +82,7 @@ public class FireworkRocketRecipe extends CustomRecipe {
+ 
+     @Override
+     public ItemStack getResultItem(RegistryAccess registryManager) {
+-        return new ItemStack(Items.FIREWORK_ROCKET);
++        return new ItemStack(Items.FIREWORK_ROCKET, 3); // Paper - Fix incorrect crafting result amount
+     }
+ 
+     @Override