fix: WaitForTaskYield getting stuck

Engine.Core/Systems/Yields/WaitForTaskYield.cs

@@ -15,15 +15,15 @@ public class WaitForTaskYield(Task task, TaskCompletionStatus completionStatus =
                     throw new("Task has been canceled.");
                 if (task.IsFaulted)
                     throw task.Exception ?? new("Task has faulted.");
-                return task.IsCompletedSuccessfully;
+                return !task.IsCompletedSuccessfully;
 
             case TaskCompletionStatus.Failed:
                 if (task.IsCompletedSuccessfully)
                     throw new("Task was completed successfully.");
-                return task.IsFaulted;
+                return !task.IsFaulted;
         }
 
-        return task.IsCompleted;
+        return !task.IsCompleted;
     }
 
     public enum TaskCompletionStatus