Fix slider ticks not showing up again once replayed

Fixes #1456

osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderTick.cs

@@ -28,6 +28,10 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
 
             Size = new Vector2(16) * sliderTick.Scale;
 
+            // The containing DrawableSlider is updated before us and clears our transforms, so we need to be
+            // present to get updated and have UpdateState correctly called when rewinding.
+            AlwaysPresent = true;
+
             Masking = true;
             CornerRadius = Size.X / 2;