Fix ruleset selector not receiving key input on toolbar absence

osu.Game/Overlays/Toolbar/Toolbar.cs

@@ -33,6 +33,10 @@ public class Toolbar : VisibilityContainer
 
         private readonly Bindable<OverlayActivation> overlayActivationMode = new Bindable<OverlayActivation>(OverlayActivation.All);
 
+        // Required for toolbar components that need to listen for key input
+        // to invoke specific actions while toolbar is in hidden state.
+        public override bool PropagateNonPositionalInputSubTree => true;
+
         public Toolbar()
         {
             RelativeSizeAxes = Axes.X;