Fixing loading non-Node3DDataResources

addons/save_load_system/autoloads/save_game_manager.gd

@@ -244,8 +244,8 @@ func _on_apply_save() -> void:
 
 	var root_node: Window = get_tree().root
 	for resource: Resource in _loaded_save_resource.save_data_nodes:
-		if resource is Node3DDataResource:
-			(resource as Node3DDataResource)._load_data(root_node)
+		if resource is NodeDataResource:
+			(resource as NodeDataResource)._load_data(root_node)
 
 	apply_complete.emit()