ISLE sets media.settings standalone_url, should leave it be.

[rosiel]

This is actually in Buildkit, but it appears if you use ISLE to create an instance of the Starter Site.

The "standalone url" is a configuration that falls into "how do you want to set up your site" and does not need to be explicitly set by ISLE when building the site - it should leave the starter site's value as it is. This is unlike things like the Matomo URL and Cantaloupe URL, which ISLE does need to set because it knows what they need to be.

from drupal/rootfs/etc/islandora/utilities.sh (get rid of this line):

    drush -l "${site_url}" -y config-set --input-format=yaml media.settings standalone_url true

Delaying doing this until Nigel's PR on Buildkit goes through and we have ISLE-DC working again