### 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 (data.unhandled_key_input) {
				add_to_group("_vp_unhandled_key_input" + itos(get_viewport()->get_instance_id()));
			}
			get_tree()->nodes_in_tree_count++;
			orphan_node_count--;
		} break;
		case NOTIFICATION_EXIT_TREE: {
			ERR_FAIL_NULL(get_viewport());
			ERR_FAIL_NULL(get_tree());
			get_tree()->nodes_in_tree_count--;
			orphan_node_count++;
			if (data.input) {
				remove_from_group("_vp_input" + itos(get_viewport()->get_instance_id()));
			}
			if (data.shortcut_input) {
				remove_from_group("_vp_shortcut_input" + itos(get_viewport()->get_instance_id()));
			}
			if (data.unhandled_input) {
				remove_from_group("_vp_unhandled_input" + itos(get_viewport()->get_instance_id()));
			}
			if (data.unhandled_key_input) {
				remove_from_group("_vp_unhandled_key_input" + itos(get_viewport()->get_instance_id()));
			}
			
			if (_is_any_processing()) {
				_remove_from_process_thread_group();
			}
			
			if (data.process_thread_group_owner == this) {