refactor(troubleshooting): Add app router page under feature flags

frontend/.env.development

@@ -14,4 +14,4 @@ NEXT_PUBLIC_ALGOLIA_PRODUCT_INDEX_NAME=dev_product_group_en
 NEXT_PUBLIC_DEFAULT_STORE_CODE=test
 
 # Flags
-# NEXT_PUBLIC_FLAG__STORE_PAGES_APP_ROUTER_ENABLED=true
+NEXT_PUBLIC_FLAG__APP_ROUTER_TROUBLESHOOTING_PAGE_ENABLED=true

frontend/app/(defaultLayout)/app-router/Troubleshooting/[device]/[problem]/[wikiid]/page.tsx

@@ -0,0 +1,24 @@
+import { flags } from '@config/flags';
+import { notFound } from 'next/navigation';
+
+interface WikiPageProps {
+   params: {
+      device: string;
+      problem: string;
+      wikiid: string;
+   };
+   searchParams: {
+      disableCacheGets?: string | string[] | undefined;
+      variant?: string;
+   };
+}
+
+export default async function WikiPage({ params }: WikiPageProps) {
+   if (!flags.APP_ROUTER_TROUBLESHOOTING_PAGE_ENABLED) notFound();
+
+   return (
+      <div>
+         WikiPage: <code>{JSON.stringify(params, null, 2)}</code>
+      </div>
+   );
+}

frontend/config/flags.ts

@@ -1,4 +1,5 @@
 export const flags = {
-   // STORE_PAGES_APP_ROUTER_ENABLED:
-   //    process.env.NEXT_PUBLIC_FLAG__STORE_PAGES_APP_ROUTER_ENABLED === 'true',
+   APP_ROUTER_TROUBLESHOOTING_PAGE_ENABLED:
+      process.env.NEXT_PUBLIC_FLAG__APP_ROUTER_TROUBLESHOOTING_PAGE_ENABLED ===
+      'true',
 };