Fix Nullability Annotations for PrepareItemEnchantEvent (#7681)

patches/api/0175-Fix-Spigot-annotation-mistakes.patch

@@ -103,9 +103,18 @@ index f124b35ec76e6cb6a1a0dc464005087043c3efd0..94a2fef0dc9e13c754cd31d5eabc1bde
 +@Deprecated // Paper
  public interface LingeringPotion extends ThrownPotion { }
 diff --git a/src/main/java/org/bukkit/event/enchantment/PrepareItemEnchantEvent.java b/src/main/java/org/bukkit/event/enchantment/PrepareItemEnchantEvent.java
-index 2ff1b1308571d8f8056d3359e8a8ba4a589c3726..e669ad8ecd182c6899c7820414e6ee1f7312d699 100644
+index 2ff1b1308571d8f8056d3359e8a8ba4a589c3726..8eb6f4090578d9e1b12aff813840108fdeece730 100644
 --- a/src/main/java/org/bukkit/event/enchantment/PrepareItemEnchantEvent.java
 +++ b/src/main/java/org/bukkit/event/enchantment/PrepareItemEnchantEvent.java
+@@ -23,7 +23,7 @@ public class PrepareItemEnchantEvent extends InventoryEvent implements Cancellab
+     private boolean cancelled;
+     private final Player enchanter;
+ 
+-    public PrepareItemEnchantEvent(@NotNull final Player enchanter, @NotNull InventoryView view, @NotNull final Block table, @NotNull final ItemStack item, @NotNull final EnchantmentOffer[] offers, final int bonus) {
++    public PrepareItemEnchantEvent(@NotNull final Player enchanter, @NotNull InventoryView view, @NotNull final Block table, @NotNull final ItemStack item, @org.jetbrains.annotations.Nullable final EnchantmentOffer @NotNull [] offers, final int bonus) { // Paper - offers can contain null values
+         super(view);
+         this.enchanter = enchanter;
+         this.table = table;
 @@ -68,6 +68,7 @@ public class PrepareItemEnchantEvent extends InventoryEvent implements Cancellab
       * @return experience level costs offered
       * @deprecated Use {@link #getOffers()} instead of this method
@@ -114,6 +123,16 @@ index 2ff1b1308571d8f8056d3359e8a8ba4a589c3726..e669ad8ecd182c6899c7820414e6ee1f
      @NotNull
      public int[] getExpLevelCostsOffered() {
          int[] levelOffers = new int[offers.length];
+@@ -85,8 +86,7 @@ public class PrepareItemEnchantEvent extends InventoryEvent implements Cancellab
+      *
+      * @return list of available enchantment offers
+      */
+-    @NotNull
+-    public EnchantmentOffer[] getOffers() {
++    public @org.jetbrains.annotations.Nullable EnchantmentOffer @NotNull [] getOffers() { // Paper offers can contain null values
+         return offers;
+     }
+ 
 diff --git a/src/main/java/org/bukkit/inventory/CraftingInventory.java b/src/main/java/org/bukkit/inventory/CraftingInventory.java
 index df81bac9ecff697f98941e5c8490e10391e90090..a32977ba3ba60a1c9aee6e469d5d6cd1887c55a2 100644
 --- a/src/main/java/org/bukkit/inventory/CraftingInventory.java