fix: return baseUrls if no uid is given to language switcher query

app/[lang]/(live-current)/not-found.tsx

@@ -1,12 +1,13 @@
-import { headers } from "next/headers"
+"use client"
 
-import { Lang } from "@/constants/languages"
+import { useParams } from "next/navigation"
 
 import NotFound from "@/components/Current/NotFound"
 
+import { LangParams } from "@/types/params"
+
 export default function NotFoundPage() {
-  const headersList = headers()
-  const lang = headersList.get("x-sh-language") as Lang
+  const { lang } = useParams<LangParams>()
 
   return <NotFound lang={lang} />
 }