Something I've asked to be done for a long time. Relevant because I've
complained about this on every addition of a new piece of user-local
state: friends, blocks, and now favourite beatmaps.
It's just so messy managing all this inside `APIAccess` next to
everything else, IMO.
The "partial" leaderboard logic in `SoloGameplayLeaderboardProvider`
always assumed the online fetch would request 50 scores, which is no
longer the case after https://github.com/ppy/osu/pull/33100.
* Remove unnecessary information from matchmaking beatmap panel
* Move avatar overlay inside card for better layout
* Allow higher jumping when jumping in succession
* Exclude player panel avatars from masking
* Adjust player panel animations a bit further
* Add avatar-only display mode
* Fix round warmup test not working
* Remove dead test scenes
* Fix edge case where users are added to not-yet-loaded card
* Decouple `PlayerPanel` from `UserPanel`
* Fix remaining test failure (and rename test to match new naming)