Fix opening inv in PlayerRecipeBookClickEvent handler (#7552)

patches/server/Add-and-implement-PlayerRecipeBookClickEvent.patch

@@ -14,13 +14,14 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
          if (!this.player.isSpectator() && this.player.containerMenu.containerId == packet.getContainerId() && this.player.containerMenu instanceof RecipeBookMenu) {
 -            this.server.getRecipeManager().byKey(packet.getRecipe()).ifPresent((irecipe) -> {
 -                ((RecipeBookMenu) this.player.containerMenu).handlePlacement(packet.isShiftDown(), irecipe, this.player);
+-            });
 +            // Paper start - fire event for clicking recipes in the recipe book
 +            com.destroystokyo.paper.event.player.PlayerRecipeBookClickEvent event = new com.destroystokyo.paper.event.player.PlayerRecipeBookClickEvent(
 +                player.getBukkitEntity(), org.bukkit.craftbukkit.util.CraftNamespacedKey.fromMinecraft(packet.getRecipe()), packet.isShiftDown());
-+            if (event.callEvent()) {
++            if (event.callEvent() && this.player.containerMenu instanceof RecipeBookMenu<?> recipeBookMenu) { // check if inventory changed during event handling
 +                this.server.getRecipeManager().byKey(org.bukkit.craftbukkit.util.CraftNamespacedKey.toMinecraft(event.getRecipe())).ifPresent((irecipe) -> {
-+                    ((RecipeBookMenu) this.player.containerMenu).handlePlacement(event.isMakeAll(), irecipe, this.player);
-             });
++                    recipeBookMenu.handlePlacement(event.isMakeAll(), irecipe, this.player);
++                });
 +            } // Paper end
          }
      }