Update src/Tests/Microsoft.Diagnostics.Monitoring.WebApi.UnitTests/Op…

…eration/EgressOperationServiceTests.cs

Co-authored-by: Justin Anderson <[email protected]>

src/Tests/Microsoft.Diagnostics.Monitoring.WebApi.UnitTests/Operation/EgressOperationServiceTests.cs

@@ -138,7 +138,7 @@ public async Task ExecuteAsync_Failure_TransitionsState_ToFaulted(bool isStarted
                 throw testException;
             });
 
-            TaskCompletionSource<ExecutionResult<EgressResult>> egressResultCompletionSource = new();
+            TaskCompletionSource<ExecutionResult<EgressResult>> egressResultCompletionSource = new(TaskCreationOptions.RunContinuationsAsynchronously);
 
             _ = mockStore
                 .Setup(m => m.CompleteOperation(request.OperationId, It.IsAny<ExecutionResult<EgressResult>>()))