plainui: share URL includes locale in archive mode

src/plainui/jinja2/plainui/components/header_buttons.html

@@ -145,7 +145,7 @@
 {% macro share(title=_("share this "), color="transparent" ) -%}
     {% if not disable_share %}
       <a
-          href="{{ hub_absolute_self(request, i18n=False) }}"
+          href="{{ hub_absolute_self(request, i18n=archive_mode) }}"
           class="btn-icon-big btn-{{ color }} nav-link"
           title="{{ title }}"
           target="_blank"