Fix test race with new behavior

Author: yuandrew

test/integration_test.go

@@ -4303,8 +4303,10 @@ func (ts *IntegrationTestSuite) testUpdateOrderingCancel(cancelWf bool) {
 		}()
 	}
 
-	// The server does not support admitted updates, so we send the update in a separate goroutine
-	time.Sleep(5 * time.Second)
+	// The server does not support admitted updates, so we send the update in a separate goroutine.
+	// Keep this shorter than the activity's ScheduleToCloseTimeout (5s) so the new worker
+	// has time to execute activities before they time out.
+	time.Sleep(2 * time.Second)
 	// Now create a new worker on that same task queue to resume the work of the
 	// workflow
 	nextWorker := worker.New(ts.client, ts.taskQueueName, worker.Options{})