Slick slider: all slide as link

Theme file:

function mytheme_theme_suggestions_slick_slide_alter(array &$suggestions, array $variables) {
 $suggestion_options[] = $variables['element']['#settings']['view_name'] ?? NULL;
 foreach ($suggestion_options as $suggestion_option) {
   $suggestions[] = 'slick_slide__' . Html::cleanCssIdentifier($suggestion_option, [
       ' ' => '_',
       '_' => '_',
       '/' => '_',
       '[' => '_',
       ']' => '',
     ]);
 }
}
/**
* Implements hook_preprocess_HOOK().
*/
function mytheme_preprocess_slick_slide(&$variables) {
 $slick_slide = $variables['element']['#item']['slide'];
 if (isset($slick_slide['#item'])) {
   $slick_item = $slick_slide['#item'];
   if ($slick_item) {
     $media = $slick_item->getEntity();
     if ($media) {
       $slide_link_field = $media->field_link;
       if ($slide_link_field) {
         $slide_uri = $slide_link_field->uri;
         if ($slide_uri) {
           $slide_url = Url::fromUri($slide_uri)->toString();
           if ($slide_url) {
             $variables['slide_url'] = $slide_url;
           }
         }
       }
     }
   }
 }
}

Template:

{%
 set classes = [
   'slide--' ~ delta,
   item.slide is empty ? 'slide--text',
   settings.layout ? 'slide--caption--' ~ settings.layout|clean_class,
   settings.class ? settings.class
 ]
%}
{%
 set content_classes = [
   settings.detroy ? 'slide',
   not settings.detroy ? 'slide__content'
 ]
%}
{%
 set caption_classes = [
   'slide__caption',
 ]
%}
{% set slide %}
 {% block slick_slide %}
   {% if settings.split and not settings.unslick %}
     <div class="slide__media">{{ item.slide }}</div>
   {% else %}
     {{ item.slide }}
   {% endif %}
 {% endblock %}
{% endset %}
{% if settings.wrapper %}
 <div{{ attributes.addClass(classes) }}>
   {% if slide_url %}
   <a class="stretched-link" href="{{ slide_url }}" target="_blank">
     {% if item.slide %}
       {{ slide }}
     {% endif %}
   </a>
   {% else %}
   {% if item.slide %}
     {{ slide }}
   {% endif %}
   {% endif %}
 {% if settings.use_ca %}<div{{ content_attributes.addClass(content_classes) }}>{% endif %}
{% endif %}
{% if settings.wrapper %}
 {% if settings.grid is empty %}</div>{% endif %}
 </div>
{% endif %}