feat(ui): update WithNavBar component structure for improved accessibility

Author: malav2110

apps/site/components/withNavBar.tsx

@@ -54,12 +54,12 @@ const WithNavBar: FC = () => {
 
   return (
     <div>
-      <WithBanner section="index" />
-
       <SkipToContentButton>
         {t('components.common.skipToContent')}
       </SkipToContentButton>
 
+      <WithBanner section="index" />
+
       <NavBar
         navItems={navigationItems.map(([, { label, link, target }]) => ({
           link,