### Godot version

4.1.1

### System information

linux

### Issue description

[simplescreenrecorder-2023-08-30_15.01.51.webm](https://github.com/godotengine/godot-proposals/assets/71937306/537d92b9-4f98-4fe6-adf4-71297be0471a)

I guess this wasn't the case before since I could save a layout named "2 monitors".

### Steps to reproduce

press space

### Minimal reproduction project

none
if (updating_tree) {
		return;
	}
	TreeItem *edited_item = import_items_tree->get_edited();
	if (!edited_item) {
		return;
	}
	updating_tree = true;
	int edited_column = import_items_tree->get_edited_column();
	bool is_checked = edited_item->is_checked(edited_column);
	if (is_checked) {
		if (edited_column == IMPORT_ITEM_DATA) {
			edited_item->set_checked(IMPORT_ITEM, true);
			edited_item->propagate_check(IMPORT_ITEM);
		}
	} else {
		if (edited_column == IMPORT_ITEM) {
			edited_item->set_checked(IMPORT_ITEM_DATA, false);
			edited_item->propagate_check(IMPORT_ITEM_DATA);
		}
	}
	edited_item->propagate_check(edited_column);
	updating_tree = false;
}
void ThemeItemImportTree::_check_propagated_to_tree_item(Object *p_obj, int p_column) {