fix(@schematics/angular): add ServiceWorkerModule in dev mode, but disabled

Author: alxhub

packages/schematics/angular/application/other-files/app.module.ts

@@ -15,7 +15,7 @@ import { environment } from '../environments/environment';<% } %>
   imports: [
     BrowserModule<% if (routing) { %>,
     AppRoutingModule<% } %><% if (serviceWorker) { %>,
-    environment.production ? ServiceWorkerModule.register('/ngsw-worker.js') : []<% } %>
+    ServiceWorkerModule.register('/ngsw-worker.js', { enabled: environment.production })<% } %>
   ],
   providers: [],
   bootstrap: [AppComponent]