Fix isInteractable for copper chests (#13325)

Co-authored-by: Bjarne Koll <[email protected]>

Author: traksag

paper-server/src/main/java/org/bukkit/craftbukkit/block/CraftBlockType.java

@@ -82,12 +82,12 @@ private static boolean hasMethod(Class<?> clazz, Class<?>... params) {
     private static boolean isInteractable(Block block) {
         Class<?> clazz = block.getClass();
 
-        boolean hasMethod = CraftBlockType.hasMethod(clazz, CraftBlockType.USE_WITHOUT_ITEM_ARGS) || CraftBlockType.hasMethod(clazz, CraftBlockType.USE_ITEM_ON_ARGS);
-
-        if (!hasMethod && clazz.getSuperclass() != BlockBehaviour.class) {
-            clazz = clazz.getSuperclass();
+        boolean hasMethod = false;
 
+        while (!hasMethod && clazz != BlockBehaviour.class && clazz != null) {
             hasMethod = CraftBlockType.hasMethod(clazz, CraftBlockType.USE_WITHOUT_ITEM_ARGS) || CraftBlockType.hasMethod(clazz, CraftBlockType.USE_ITEM_ON_ARGS);
+
+            clazz = clazz.getSuperclass();
         }
 
         return hasMethod;