fix: add error fallback for mobile dropdown parallel route

app/[lang]/(live-current)/@myPagesMobileDropdown/current-content-page/page.tsx

@@ -0,0 +1,15 @@
+import { serverClient } from "@/lib/trpc/server"
+
+import MyPagesMobileDropdown from "@/components/Current/Header/MyPagesMobileDropdown"
+
+import { LangParams, PageArgs } from "@/types/params"
+
+export default async function MyPagesMobileDropdownPage({
+  params,
+}: PageArgs<LangParams>) {
+  const navigation = await serverClient().contentstack.myPages.navigation.get()
+  if (!navigation) {
+    return null
+  }
+  return <MyPagesMobileDropdown navigation={navigation} lang={params.lang} />
+}