Fix boat and minecart inventories on region switch [ci skip] (#13826)

Author: coredex-source

paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftChestBoat.java

@@ -6,11 +6,9 @@
 import org.bukkit.inventory.Inventory;
 
 public abstract class CraftChestBoat extends CraftBoat implements org.bukkit.entity.ChestBoat, com.destroystokyo.paper.loottable.PaperLootableEntityInventory { // Paper
-    private final Inventory inventory;
 
     public CraftChestBoat(CraftServer server, AbstractChestBoat entity) {
         super(server, entity);
-        this.inventory = new CraftInventory(entity);
     }
 
     @Override
@@ -20,6 +18,6 @@ public AbstractChestBoat getHandle() {
 
     @Override
     public Inventory getInventory() {
-        return this.inventory;
+        return new CraftInventory(getHandle());
     }
 }

paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftMinecartChest.java

@@ -8,15 +8,12 @@
 
 public class CraftMinecartChest extends CraftMinecartContainer implements StorageMinecart, com.destroystokyo.paper.loottable.PaperLootableEntityInventory { // Paper
 
-    private final CraftInventory inventory;
-
     public CraftMinecartChest(CraftServer server, MinecartChest entity) {
         super(server, entity);
-        this.inventory = new CraftInventory(entity);
     }
 
     @Override
     public Inventory getInventory() {
-        return this.inventory;
+        return new CraftInventory(getHandle());
     }
 }