Add link to the product title on WooCommerce product_page shortcode

On the homepage of our website, we have added a shortcode to show the product page of the featured product.

I have added a SKU 'featured' to the featured product, so I could use the following shortcode to show the featured product [product_page sku="featured"].

Now I would like to modify the code of the shortcode so the name of the product links to the full featured product page.

Below is the WooCommerce that sets up the product_page.

/**
 * Show a single product page.
 *
 * @param array $atts Attributes.
 * @return string
 */
public static function product_page( $atts ) {
    if ( empty( $atts ) ) {
        return '';
    }

    if ( ! isset( $atts['id'] ) && ! isset( $atts['sku'] ) ) {
        return '';
    }

    $args = array(
        'posts_per_page'      => 1,
        'post_type'           => 'product',
        'post_status'         => 'publish',
        'ignore_sticky_posts' => 1,
        'no_found_rows'       => 1,
    );

    if ( isset( $atts['sku'] ) ) {
        $args['meta_query'][] = array(
            'key'     => '_sku',
            'value'   => sanitize_text_field( $atts['sku'] ),
            'compare' => '=',
        );

        $args['post_type'] = array( 'product', 'product_variation' );
    }

    if ( isset( $atts['id'] ) ) {
        $args['p'] = absint( $atts['id'] );
    }

    // Don't render titles if desired.
    if ( isset( $atts['show_title'] ) && ! $atts['show_title'] ) {
        remove_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_title', 5 );
    }

    // Change form action to avoid redirect.
    add_filter( 'woocommerce_add_to_cart_form_action', '__return_empty_string' );

    $single_product = new WP_Query( $args );

    $preselected_id = '0';

    // Check if sku is a variation.
    if ( isset( $atts['sku'] ) && $single_product->have_posts() && 'product_variation' === $single_product->post->post_type ) {

        $variation  = new WC_Product_Variation( $single_product->post->ID );
        $attributes = $variation->get_attributes();

        // Set preselected id to be used by JS to provide context.
        $preselected_id = $single_product->post->ID;

        // Get the parent product object.
        $args = array(
            'posts_per_page'      => 1,
            'post_type'           => 'product',
            'post_status'         => 'publish',
            'ignore_sticky_posts' => 1,
            'no_found_rows'       => 1,
            'p'                   => $single_product->post->post_parent,
        );

        $single_product = new WP_Query( $args );
    ?>
        <script type="text/javascript">
            jQuery( document ).ready( function( $ ) {
                var $variations_form = $( '[data-product-page-preselected-id="<?php echo esc_attr( $preselected_id ); ?>"]' ).find( 'form.variations_form' );

                <?php foreach ( $attributes as $attr => $value ) { ?>
                    $variations_form.find( 'select[name="<?php echo esc_attr( $attr ); ?>"]' ).val( '<?php echo esc_js( $value ); ?>' );
                <?php } ?>
            });
        </script>
    <?php
    }

    // For "is_single" to always make load comments_template() for reviews.
    $single_product->is_single = true;

    ob_start();

    global $wp_query;

    // Backup query object so following loops think this is a product page.
    $previous_wp_query = $wp_query;
    // @codingStandardsIgnoreStart
    $wp_query          = $single_product;
    // @codingStandardsIgnoreEnd

    wp_enqueue_script( 'wc-single-product' );

    while ( $single_product->have_posts() ) {
        $single_product->the_post()
        ?>
        <div class="single-product" data-product-page-preselected-id="<?php echo esc_attr( $preselected_id ); ?>">
            <?php wc_get_template_part( 'content', 'single-product' ); ?>
        </div>
        <?php
    }

    // Restore $previous_wp_query and reset post data.
    // @codingStandardsIgnoreStart
    $wp_query = $previous_wp_query;
    // @codingStandardsIgnoreEnd
    wp_reset_postdata();

    // Re-enable titles if they were removed.
    if ( isset( $atts['show_title'] ) && ! $atts['show_title'] ) {
        add_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_title', 5 );
    }

    remove_filter( 'woocommerce_add_to_cart_form_action', '__return_empty_string' );

    return '<div class="woocommerce">' . ob_get_clean() . '</div>';
}

You can see they address the product_title with $atts['show_title']. So I guess we should wrap this with a href link of the product link, but I'm afraid my knowledge in that area lacks a bit.

Can somebody assist me with this, please? Much appreciated!