notifications-admin/app/templates/views/templates/_search-box.html

    {% if show_search_box %}
      <div data-module="autofocus">
        <div class="live-search" data-module="live-search" data-targets="#template-list .column-whole">
          {{ textbox(
            search_form.search,
            width='1-1'
          ) }}
        </div>
      </div>
    {% endif %}