feat(SW-186): implement cms data into new header

components/Header/MainMenu/NavigationMenu/index.tsx

@@ -8,12 +8,20 @@ export default function NavigationMenu({
   items,
   isMobile,
 }: NavigationMenuProps) {
+  const filteredItems = items.filter(
+    ({ link, submenu }) => submenu.length || link
+  )
+
+  if (!filteredItems.length) {
+    return null
+  }
+
   return (
     <ul
       className={`${styles.navigationMenu} ${isMobile ? styles.mobile : styles.desktop}`}
     >
-      {items.map((item) => (
-        <li key={item.id} className={styles.item}>
+      {filteredItems.map((item) => (
+        <li key={item.title} className={styles.item}>
           <NavigationMenuItem isMobile={isMobile} item={item} />
         </li>
       ))}