### 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
}
	}
	{
		names.clear();
		ThemeDB::get_singleton()->get_default_theme()->get_font_list(default_type, &names);
		for (const StringName &E : names) {
			if (!new_snapshot->has_font(E, edited_type)) {
				new_snapshot->set_font(E, edited_type, ThemeDB::get_singleton()->get_default_theme()->get_font(E, edited_type));
			}
		}
	}
	{
		names.clear();
		ThemeDB::get_singleton()->get_default_theme()->get_font_size_list(default_type, &names);
		for (const StringName &E : names) {
			if (!new_snapshot->has_font_size(E, edited_type)) {
				new_snapshot->set_font_size(E, edited_type, ThemeDB::get_singleton()->get_default_theme()->get_font_size(E, edited_type));
			}
		}
	}
	{
		names.clear();
		ThemeDB::get_singleton()->get_default_theme()->get_color_list(default_type, &names);
		for (const StringName &E : names) {
			if (!new_snapshot->has_color(E, edited_type)) {
				new_snapshot->set_color(E, edited_type, ThemeDB::get_singleton()->get_default_theme()->get_color(E, edited_type));
			}
		}
	}
	{