enable the display of the short description in the product search results.

Try adding this PHP Snippet to your site:

add_filter( 'the_excerpt', 'shortcode_unautop');
add_filter( 'the_excerpt', 'do_shortcode');

?

David's code can be added with one of these methods if that's what you are wondering:
Adding PHP: https://docs.generatepress.com/article/adding-php/