Who would have guessed that `Schedule` calls were there for a reason!
I've tidied things up. Most of the changes I've made here are not
required – the schedule is the main thing here. The reason the sound was
playing is because one-too-many schedules was removed causing beatmap
updates to update carousel specifics while still at the player loader
screen.
Note that the selection sound still plays on returning to song select,
but this is not a regression. I'm looking at fixing this in a separate
PR because I'm in a good place as far as understanding the logic right
now and it would be a waste to leave it broken.
Closes https://github.com/ppy/osu/issues/25875.
Fixes issue described in the following comment:
https://github.com/ppy/osu/pull/25759#issuecomment-1855954637
That is just not how the tooltip system is supposed to be used.
To name the individual sins:
- Caching and returning a tooltip instance like the classes that used
tooltips is incorrect. The lifetime of tooltip instances is managed by
the tooltip container. `GetCustomTooltip()` is called by it
exclusively. It should return a fresh instance every time.
- Not putting actual data in `IHasCustomTooltip.TooltipContent` is
wrong.
- Having `Tooltip.SetContent()` be a no-op is *grossly and flagrantly*
wrong.
I'm not even sure which particular combination of the above
transgressions caused the issue as it presented itself, but at this time
I frankly do not care.