Update Starter content & config for latest Mercury changes
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3562779. -->
Reported by: [pameeela](https://www.drupal.org/user/1431110)
Related to !713 !712
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>Starter's content is mostly broken after Mercury refactoring. Need to update everything accordingly!</p>
issue