[JENKINS-62065] Adding visibility to the transition

Setting visibility to hidden along with the opacity transition makes the underlying breadcrumb clickable again, despite the notification-bar div

war/src/main/less/base/style.less

@@ -1672,6 +1672,7 @@ table.progress-bar.red td.progress-bar-done {
   }
   to{
     opacity: 1;
+    visibility: visible;
   }
 }
 
@@ -1681,6 +1682,7 @@ table.progress-bar.red td.progress-bar-done {
   }
   to{
     opacity: 0;
+    visibility: hidden;
   }
 }