wagtail/wagtail/admin/templates/wagtailadmin/shared/side_panel_toggles.html

{% load wagtailadmin_tags %}

{% for panel in side_panels %}
    <button type="button"
        class="{{ nav_icon_button_classes }} expanded:w-text-primary"
        aria-label="{{ panel.toggle_aria_label }}"
        data-tippy-content="{{ panel.title }}"
        data-tippy-offset="[0,0]"
        data-tippy-placement="bottom"
        data-side-panel-toggle="{{ panel.name }}"
        aria-expanded="false"
    >
        {% icon name=panel.toggle_icon_name class_name=nav_icon_classes %}
    </button>
{% endfor %}