Fix a cosmetic UI issue where -0.0 is displayed when clicking the Calibrate using last play button.
Removed changes to AudioOffsetAdjustControl and added check to ToStandardFormattedString for if floatValue is 0
As proposed in https://github.com/ppy/osu/discussions/33572.
Note that this won't work if you leave to song select. We could make
that work but it would require further global faffing and I don't think
it's worth the effort.
This should theoretically not be possible, but while we are sharing this
control's implementation between gameplay and non-gameplay usages, let's
ensure nothing weird can occur.
This is an interesting scenario where we arrive at a fresh
`BeatmapOffsetControl` but with a reference score (from the last play).
Our best assumption here is that the beatmap's offset hasn't changed
since the last play, so we want to use it for the `lastPlayBeatmapOffset`.
But due to unfortunate order of execution, `Current.Value` was not yet
initialised.