They were broken because `SerialisedDrawableInfo` is a reference type
and as such equality checks will use reference equality rather than
member equality.
Probably CI running slow timing balls.
The point of failure is `waitUntilStoryboardSamplesPlay()`
after already testing the important part of the test (that
the samples stop on skip) so let's give it another possible
point to recover.
See https://github.com/ppy/osu/actions/runs/6698399814/job/18201753701.
Large ticks are not a thing in mania anymore, so the judgement counter
tests began to fail as `LargeTickHit` is no longer a valid hit result
in that ruleset.
`TestLastPlayedUpdated` was implicitly relying on running first.
`TestGuestScoreIsStoredAsGuest` showing up changed test ordering,
causing the former test to fail if it didn't get to run first.