Tests ordering of SpeedAdjustmentContainers and DrawableHitObjects added to the ScrollingHitObjectContainer.
This isn't utilized at the moment, and we should be avoiding this here in the first place.
# Conflicts: # osu.Game.Rulesets.Mania/Beatmaps/ManiaBeatmapConverter.cs # osu.Game.Rulesets.Mania/UI/ManiaRulesetContainer.cs # osu.Game/Rulesets/UI/RulesetContainer.cs
# Conflicts: # osu.Desktop.Tests/Visual/TestCaseScrollingPlayfield.cs