Should [stats.mode](https://github.com/scipy/scipy-stubs/blob/5a5b37110c79d21cc274940d52464947a9c00b00/scipy-stubs/stats/_stats_py.pyi#L355) return [ModeResult](https://github.com/scipy/scipy/blob/0f2342f34cc850e7137a74afd33c6877c1c790e6/scipy/stats/_stats_py.py#L478)?
