Fix runtime default locale resolution

app/[locale]/(site)/contact/page.tsx

@@ -8,7 +8,7 @@ import { MotionFade } from "@/components/motion-fade";
 import { ContactForm } from "@/components/site/contact-form";
 import { buildLocalizedMetadata } from "@/lib/metadata";
 import { getPublicContactProtectionSettings, getSiteSettings } from "@/lib/app-config";
-import { getLocalizedPath, resolveLocale } from "@/lib/locale";
+import { FALLBACK_LOCALE, getLocalizedPath, resolveLocale } from "@/lib/locale";
 import { AppCard } from "@/components/ui/app-card";
 import { CardContent, CardHeader, CardTitle } from "@/components/ui/card";
 
@@ -22,7 +22,7 @@ type ContactPageProps = {
 
 export async function generateMetadata({ params }: ContactPageProps): Promise<Metadata> {
   const { locale } = await params;
-  const localeKey = resolveLocale(locale);
+  const localeKey = resolveLocale(locale, FALLBACK_LOCALE);
   const t = await getTranslations({ locale: localeKey, namespace: "contactPage" });
 
   return await buildLocalizedMetadata({
@@ -35,7 +35,7 @@ export async function generateMetadata({ params }: ContactPageProps): Promise<Me
 
 export default async function ContactPage({ params }: ContactPageProps) {
   const { locale } = await params;
-  const localeKey = resolveLocale(locale);
+  const localeKey = resolveLocale(locale, FALLBACK_LOCALE);
   const [t, protection, siteSettings] = await Promise.all([
     getTranslations({ locale: localeKey, namespace: "contactPage" }),
     getPublicContactProtectionSettings(),