This was definitely added at someone's request, since I wouldn't have
put it here. But it's displayed below in the details section already and
also not displayed in the updated "wedge" in the new design.
See https://github.com/ppy/osu/discussions/17537 for discussion.
The test was checking the test scene's own `SelectedMods` bindable
rather than the multiplayer screen's, and the former was never actually
being mutated by anything. Therefore the case would pass even on
`master` with the fix reverted.