Add blueprint type to timeline test

osu.Game.Tests/Visual/Editor/TestSceneTimelineBlueprintContainer.cs

@@ -1,6 +1,8 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
+using System.Collections.Generic;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Game.Screens.Edit.Compose.Components.Timeline;
@@ -10,6 +12,17 @@ namespace osu.Game.Tests.Visual.Editor
     [TestFixture]
     public class TestSceneTimelineBlueprintContainer : TimelineTestScene
     {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(TimelineHitObjectBlueprint),
+        };
+
         public override Drawable CreateTestComponent() => new TimelineBlueprintContainer();
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            Clock.Seek(10000);
+        }
     }
 }

osu.Game.Tests/Visual/Editor/TestSceneTimingScreen.cs

@@ -27,7 +27,12 @@ namespace osu.Game.Tests.Visual.Editor
         };
 
         [Cached(typeof(EditorBeatmap))]
-        private readonly EditorBeatmap editorBeatmap = new EditorBeatmap(new OsuBeatmap());
+        private readonly EditorBeatmap editorBeatmap;
+
+        public TestSceneTimingScreen()
+        {
+            editorBeatmap = new EditorBeatmap(new OsuBeatmap());
+        }
 
         [BackgroundDependencyLoader]
         private void load()