fix: localize 404 and ensure header when no lang

app/[lang]/(live)/middleware-error/404/page.tsx

@@ -0,0 +1,11 @@
+import { Lang } from "@/constants/languages"
+
+import NotFound from "@/components/Current/NotFound"
+
+import { LangParams, PageArgs } from "@/types/params"
+
+export default function NotFoundPage({ params }: PageArgs<LangParams>) {
+  const lang = params.lang || Lang.en
+
+  return <NotFound lang={lang} />
+}