Resolves https://github.com/ppy/osu/discussions/14140.
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Until now, the multiplayer leaderboard would expand during break time.
Now, it respects the user's HUD visibility status (which can be toggled
using Shift+Tab).
Reuses SkipOverlay by calculating the endtime of the storyboard and using that as a "start point". Upon skipping the outro the score is instantly shown.
When the end of the storyboard is reached the score screen automatically shows up. If the player holds ESC (pause) during the outro, the score is displayed
The storyboard endtime is calculated by getting the latest endtime of the storyboard's elements, or simply returning 0 if there is no storyboard.
Co-Authored-By: Marlina José <marlina@umich.edu>
In theory this seemed like a good idea (and an optimisation in some
cases, due to lower fill rate), but in practice this leads to weird edge
cases.
This aims to do away with the operations on external drawables by
applying a dim to the area behind the `LoadingLayer` when required.
I went over each usage and ensured they look as good or better than
previously.
The specific bad usage here was the restoration of the colour on dispose
(if the `LoadingLayer` was disposed in a still-visible state).
I'm aware that the `BeatmapListingOverlay` will now dim completely during
load. I think this is fine for the time being.
