title: notificationclick does not fire in chrome even though registered in addEventListener in serviceworker.js
body: <p>I'm enabling web notification to my web site and added below event listener to service worker .js file,
  This works fine in edge and click event gets trigger and opens a new window, however chrome nothing happens and event it self does not trigger -</p>
  
  <pre><code>self.addEventListener('notificationclick', function (event) {
    event.notification.close();
    console.log('Notification notificationclick triggered');
    event.waitUntil(
      clients.openWindow(event.notification.data)
    );
  })
  </code></pre>