Custom Menu Meta field is not giving me url

function custom_add_menu_meta_box( $object ) {
    add_meta_box( 'custom-menu-metabox', __( 'Default Menus' ), 'custom_menu_meta_box', 'nav-menus', 'side', 'default' );
    return $object;
}

add_filter( 'nav_menu_meta_box_object', 'custom_add_menu_meta_box', 10, 1);

I have created a menu meta box named Default Menus.

Here is the function implementation.

function custom_menu_meta_box(){
	global $nav_menu_selected_id;
	$custom_nav_menu_options = json_decode(get_option('ds_custom_nav_menu'));
	$generatedMenu = [];

	for($i = 0; $i < count($custom_nav_menu_options); $i++) {
		$singleMenu = $custom_nav_menu_options[$i];
		array_push($generatedMenu, (object) [
			'ID' => 1, 
			'object_id' => 1,
			'type_label' => 'default',
			'title' =>  $singleMenu->pageTitle,
			'url' =>  $singleMenu->link,
			'type' => 'default',
			'object' => 'default',
			'db_id' => 0,
			'menu_item_parent' => 0,
			'post_parent' => 0,
			'target' => '',
			'attr_title' => '',
			'description' => '',
			'classes' => array(),
			'xfn' => '']);
	}
	
	$db_fields = false;
	// If your links will be hierarchical, adjust the $db_fields array below
	if ( false ) { 
		$db_fields = array( 'parent' => 'parent', 'id' => 'post_parent' ); 
	}
	
	$walker = new Walker_Nav_Menu_Checklist( $db_fields );
	$removed_args = array( 'action', 'customlink-tab', 'edit-menu-item', 'menu-item', 'page-tab', '_wpnonce', );
	?>
	<div id="plugin-slug-div">
		<div id="tabs-panel-plugin-slug-all" class="tabs-panel tabs-panel-active">
		<ul id="plugin-slug-checklist-pop" class="categorychecklist form-no-clear" >
		<?php echo walk_nav_menu_tree( array_map( 'wp_setup_nav_menu_item', $generatedMenu ), 0, (object) array( 'walker' => $walker ) ); ?>
		</ul>
		<p class="button-controls">
		<span class="add-to-menu">
			<input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button-secondary submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-plugin-slug-menu-item" id="submit-plugin-slug-div" />
			<span class="spinner"></span>
		</span>
		</p>
  </div>
<?php
}

I have given type ‘type’ => ‘default’
But how can I get url of this menu while I am going to show it’s not giving me url. But If I use custom, then it is giving me url with this code below:

$menu_item->url        = ! isset( $menu_item->url ) ? get_post_meta( $menu_item->ID, '_menu_item_url', true ) : $menu_item->url;