When a guest-author page is being rendered, it seems that CAP isn't consistently looking up the linked author's description if CAP's own description field is empty. This PR manually fetches the bio information from the linked user, when present.
Testing instructions
Find a guest author who is linked to a regular user
Make sure the user has a "description" filled in in their user page for the current language
See that when viewing the archives for the guest author, the user's description is shown
When a guest-author page is being rendered, it seems that CAP isn't consistently looking up the linked author's description if CAP's own description field is empty. This PR manually fetches the bio information from the linked user, when present.
Testing instructions