Fix results screen parallax being cut off

Alternative to / closes #2549.

Didn't want to reference the toolbar as was done, also wanted to remove the awkward scaling factors so rather than scaling down the inner one, we scale up the outer one.

osu.Game/Screens/Ranking/Results.cs

@@ -57,6 +57,7 @@ namespace osu.Game.Screens.Ranking
         {
             base.OnEntering(last);
             (Background as BackgroundScreenBeatmap)?.BlurTo(background_blur, 2500, Easing.OutQuint);
+            Background.ScaleTo(1.1f, transition_time, Easing.OutQuint);
 
             allCircles.ForEach(c =>
             {
@@ -102,6 +103,8 @@ namespace osu.Game.Screens.Ranking
                 c.ScaleTo(0, transition_time, Easing.OutSine);
             });
 
+            Background.ScaleTo(1f, transition_time / 4, Easing.OutQuint);
+
             Content.FadeOut(transition_time / 4);
 
             return base.OnExiting(next);
@@ -160,7 +163,6 @@ namespace osu.Game.Screens.Ranking
                                 {
                                     RelativeSizeAxes = Axes.Both,
                                     ParallaxAmount = 0.01f,
-                                    Scale = new Vector2(1 / circle_outer_scale / overscan),
                                     Anchor = Anchor.Centre,
                                     Origin = Anchor.Centre,
                                     Children = new Drawable[]