Add custom items (wraps) to menu item Wordpress #php

add_custom_items_wrap_menu_wp.php

<?php 
function my_nav_wrap() {
  // default value of 'items_wrap' is <ul id="%1$s" class="%2$s">%3$s</ul>'
  ob_start();
  the_widget( 'WC_Widget_Product_Search' ); //in this case I need WC widget
  $widget = ob_get_clean();

  // open the <ul>, set 'menu_class' and 'menu_id' values
  $wrap  = '<ul id="%1$s" class="%2$s">';

  // the widget
  $wrap .= $widget;
  
  // get nav items as configured in /wp-admin/
  $wrap .= '%3$s';
  
  // close the <ul>
  $wrap .= '</ul>';
  // return the result
  return $wrap;
}

header.php

<?php
    wp_nav_menu(
					array(
						'theme_location'  => 'primary',
						'items_wrap' => my_nav_wrap(),
						'container_class' => 'collapse navbar-collapse',
						'container_id'    => 'mobileCategoryMenu',
						'menu_class'      => 'navbar-nav mobile-cat-menu',
						'menu_id'         => 'mobile-cat-menu',
						'depth'           => 3,
						'walker'          => new wp_bootstrap_navwalker(),
					)
				);
				?>