info-overview: Make sure -dark non-text logo variant is handled
gtk_image_set_from_icon_name()
would fallback from $LOGO-text-dark
to
$LOGO-text
to $LOGO
, leaving out $LOGO-dark
which might be available.
Make sure it's in the list of possibilities by using
g_themed_icon_new_from_names()
and listing it explicitly as a possible
icon name instead.
Fixes: a3b8964a
Closes: #1415 (closed)