Links prefetching (#225)

1. Marketing Layout: speed up rendering by retrieving user session from cookies instead of using server side request
2. Use "redirecting" state when signing in to keep displaying a loading state while Next.js redirects to home page
3. Use "useCallback" to prevent double tracking when switching pages
4. Add links pre-fetching in marketing navigation
5. Add new pending state to MFA verification form
6. Pre-fetch sign-in/sign-up pages
7. Fix i18n when using regional languages
8. currency formatter should default to the region if it exists
9. Update packages

packages/shared/src/utils.ts

@@ -14,7 +14,9 @@ export function formatCurrency(params: {
   locale: string;
   value: string | number;
 }) {
-  return new Intl.NumberFormat(params.locale, {
+  const [lang, region] = params.locale.split('-');
+
+  return new Intl.NumberFormat(region ?? lang, {
     style: 'currency',
     currency: params.currencyCode,
   }).format(Number(params.value));