move wait for service-worker initialization into the notification modal

src/views/HelpNotificationsView.vue

@@ -38,7 +38,10 @@
         </p>
       </div>
 
-      <h2 class="text-xl font-semibold">If this app is not installed...</h2>
+      <h2 class="text-xl font-semibold">
+        If this is not installed as an app...
+        <!-- Note that that exact verbiage shows in a message elsewhere. -->
+      </h2>
       <div>
         <p>
           For best results on mobile, install this app on your device (as
@@ -54,13 +57,13 @@
       </div>
 
       <h2 class="text-xl font-semibold">
-        If "you must enable notifications"...
+        If you must enable notifications...
+        <!-- Note that that exact verbiage shows in a message elsewhere. -->
       </h2>
       <div>
         <p>
-          Wait for about 10 seconds (for the service worker to activate), then
           <button class="text-blue-500" @click="showNotificationChoice()">
-            click here.
+            Click here.
           </button>
         </p>
       </div>
@@ -273,6 +276,7 @@ export default class HelpNotificationsView extends Vue {
           group: "alert",
           type: "danger",
           title: "Not Subscribed",
+          // Note that this exact verbiage shows in help text.
           text: "You must enable notifications before testing the web push.",
         },
         -1,