<a href="{{ hyperlink.url }}" class="block-link {{ styleModifier }}"{% if styleModifier == 'block-link--external' %} target="_blank"{% endif %}>
    {{ hyperlink.title }}
</a>
<a href="{{ hyperlink.url }}" class="block-link {{ styleModifier }}"{% if isExternal %} target="_blank"{% endif %}>
    {{ hyperlink.title }}
    {% if isExternal %}<span class="h-offscreen">, öffnet in einem neuen Fenster</span>{% endif %}
</a>

Add isExternal variable and accessible hint to link
Add isExternal variable and accessible hint to link

SRFCMS-5953