### 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
String description;
	if (is_inside_tree()) {
		description = get_path();
	} else {
		description = get_name();
		if (description.is_empty()) {
			description = get_class();
		}
	}
	return description;
}
static SafeRefCount node_hrcr_count;
void Node::init_node_hrcr() {
	node_hrcr_count.init(1);
}
#ifdef TOOLS_ENABLED
String Node::validate_child_name(Node *p_child) {
	StringName name = p_child->data.name;
	_generate_serial_child_name(p_child, name);
	return name;
}
#endif
String Node::adjust_name_casing(const String &p_name) {