Focus focus not being transferred correctly to parent settings panel …

…on exiting nested panel

Seemingly harmless schedule delay ommission meant that the textbox may
not be in a state it can handle the incoming focus event. Regressed in
#14345 (comment).

osu.Game/Graphics/UserInterface/FocusedTextBox.cs

@@ -28,7 +28,7 @@ public void TakeFocus()
             if (!allowImmediateFocus)
                 return;
 
-            Scheduler.Add(() => GetContainingInputManager().ChangeFocus(this), false);
+            Scheduler.Add(() => GetContainingInputManager().ChangeFocus(this));
         }
 
         public new void KillFocus() => base.KillFocus();