### Godot version

v4.1.rc1.official [1f9e540f1]

### System information

Windows 10

### Issue description

Attempting to reorder the children of a TabContainer results in an unintended ordering and incorrect undo states.

Also happens in v4.0.3.stable.official [5222a99f5].

https://github.com/godotengine/godot/assets/3820082/2c2458e3-88ad-46d9-8a04-f289a049984a



### Steps to reproduce

1. Add a new TabContainer
2. Add a few children to it
3. Drag and drop to erroneously reorder them
4. Attempt to undo the change

### Minimal reproduction project

N/A
}
			if (GDVIRTUAL_IS_OVERRIDDEN(_physics_process)) {
				set_physics_process(true);
			}
			GDVIRTUAL_CALL(_ready);
		} break;
		case NOTIFICATION_POSTINITIALIZE: {
			data.in_constructor = false;
		} break;
		case NOTIFICATION_PREDELETE: {
			if (data.inside_tree && !Thread::is_main_thread()) {
				cancel_free();
				ERR_PRINT("Attempted to free a node that is currently added to the SceneTree from a thread. This is not permitted, use queue_free() instead. Node has not been freed.");
				return;
			}
			if (data.owner) {
				_clean_up_owner();
			}
			if (data.parent) {
				data.parent->remove_child(this);
			}
			
			while (data.children.size()) {
				Node *child = data.children.last()->value; 
				memdelete(child);
			}
		} break;
	}
}
void Node::_propagate_ready() {