fix: service worker issue

Try root injection as in https://angular.io/guide/service-worker-communications and https://angular.io/guide/dependency-injection

Refs #633

src/app/services/service-worker-update.service.ts

@@ -5,7 +5,7 @@ import { NotificationsService } from "./notifications.service";
 import { UserConfirmationService } from "./user-confirmation.service";
 import { interval } from "rxjs";
 
-@Injectable()
+@Injectable({providedIn: 'root'})
 export class ServiceWorkerUpdateService {
     constructor(
         private swUpdate: SwUpdate,