Here we use `IHasColumn` to support rulesets with columns, and so I moved that interface out into `osu.Game` from `osu.Game.Rulesets.Mania`.
We also use the same threshold as the unsnap check to ensure that no problems slip through. Specifically where an object is simultaneously not concurrent and not unsnapped but still on the same tick.
This was an insidious regression from a3dc1d5. Prior to that commit,
`DrawableHoldNoteHead` had `UpdateStateTransforms()` overridden, to set
the hold note head's lifetime. When that method was split into
`UpdateInitialStateTransforms()` and `UpdateHitStateTransforms()`, the
lifetime set was moved to the former.
Unfortunately, that override served two purposes: both to set the
lifetime, and to suppress hit animations which would normally be added
by the base `DrawableManiaHitObject`. That fact being missed led to
`UpdateHitStateTransforms()` hiding the hold note head immediately on
hit and with a slight delay on miss.
To resolve, explicitly override `UpdateHitStateTransforms()` and
suppress the base call, with an explanatory comment.