In scenarios with no service workers, remove the need to fetch all pages when appviewer loads

app/client/src/sagas/InitSagas.ts

@@ -65,10 +65,11 @@ export function* initializeAppViewerSaga(
     take(ReduxActionTypes.FETCH_ACTIONS_SUCCESS),
     take(ReduxActionTypes.FETCH_PAGE_LIST_SUCCESS),
   ]);
-
-  yield put({
-    type: ReduxActionTypes.FETCH_ALL_PUBLISHED_PAGES,
-  });
+  if ("serviceWorker" in navigator) {
+    yield put({
+      type: ReduxActionTypes.FETCH_ALL_PUBLISHED_PAGES,
+    });
+  }
 
   yield put({
     type: ReduxActionTypes.INITIALIZE_PAGE_VIEWER_SUCCESS,