I'm doing this silently to see if any users complain without being told
about the change. Without this, when holding left arrow for short
bursts, precisely *one* beatmap change happens before actual key repeat
kicks in, which feels really weird (updates the leaderboard / background
unexpectedly).
This is the simplest way to resolve the issue, so if users aren't
offended by it I think we should commit to it.
Personally it's still fast enough to not annoy me at all.
I can't see how this can happen in a normal flow, so just doing it as a
safety measure. Pointed out in https://github.com/ppy/osu/issues/34940
but likely due to a third party fuck being loaded.
Regressed with https://github.com/ppy/osu-server-spectator/pull/311.
As it turns out, the method not just resets ready states but also the
beatmap availabilities. So we have to send it again here.
I have a feeling this is also broken in standard multiplayer in some way
or another.