🩹 Fix fallback ternary when passing items to build (#77)

Author: Log1x

src/Navi.php

@@ -60,7 +60,7 @@ public function build(mixed $menu = null): self
 
         $items = wp_get_nav_menu_items($this->menu);
 
-        $this->items = MenuBuilder::make()->build($items ?? []);
+        $this->items = MenuBuilder::make()->build($items ?: []);
 
         return $this;
     }