Merge pull request #9317 from smoogipoo/fix-test-browser

Mark test scene as headless to fix test browser display

osu.Game.Tests/Gameplay/TestSceneGameplayClockContainer.cs

@@ -3,6 +3,7 @@
 
 using System;
 using NUnit.Framework;
+using osu.Framework.Testing;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Screens.Play;
@@ -10,6 +11,7 @@ using osu.Game.Tests.Visual;
 
 namespace osu.Game.Tests.Gameplay
 {
+    [HeadlessTest]
     public class TestSceneGameplayClockContainer : OsuTestScene
     {
         [Test]