App should warn when skipping setup assistant if no user is created

[Dave Lebbing]

Currently if a workflow reinstalls macOS and skips setup assistant, it's possible for the user to accidentally leave the MDS Create User Account panel blank, which would result in a problematic scenario when deployed. This scenario might be a good candidate for which to add a user warning when saving to volume or dmg.

[timothy perfitt]

Fixed in 11325 and later.