Apply combo offsets "colour hax" only on beatmap skins
BindValueChanged
TimelineHitObjectBlueprint
ComboIndexWithOffsetsBindable
ComboIndexBindable
TimelineBlueprintContainer
They got too big.
Closes #13443.
EditorBeatmap.Update
PerformOnSelection
OsuColour
Logic is shared with the timeline blueprints which also have the same problem of displaying text on top of a combo colour. Slightly modified the formula. Seems to yield better results on a subjective check.
This isn't required but makes the initial appearance animation nicer.
Update timeline control point display
Doesn't make a huge difference but this was intended.
Gives it a bit more visibility. This is where it was meant to sit, but didn't consider using a proxy drawable to make it work previously.