Fixed the issue that crash when close.

src/Editor/Ghost.Editor/ActivationHandler.cs

@@ -1,6 +1,5 @@
 using Ghost.Editor.Core.Utilities;
 using Ghost.Editor.Models;
-using Ghost.Engine;
 using Misaki.HighPerformance.LowLevel.Buffer;
 using System.Reflection;
 
@@ -52,7 +51,7 @@ internal static class ActivationHandler
         return arguments;
     }
 
-    public static async Task HandleAsync(LaunchArguments args)
+    public static ValueTask HandleAsync(LaunchArguments args)
     {
         var opts = new AllocationManagerInitOpts
         {
@@ -62,16 +61,18 @@ internal static class ActivationHandler
         };
 
         AllocationManager.Initialize(opts);
-
-        await Task.Run(() =>
-        {
-            TypeCache.Init();
-            App.GetService<EngineCore>();
-        });
+        TypeCache.Initialize();
 
         // await ((Core.AssetHandle.AssetService)App.GetService<IAssetService>()).Init();
 
         // TODO: Init other subsystems here.
         // await Task.Delay(10000); // Wait 10 seconds to simulate work.
+
+        return ValueTask.CompletedTask;
+    }
+
+    public static void Shutdown()
+    {
+        AllocationManager.Dispose();
     }
 }