[BUGFIX] Ensure slug update wizard uses proper sorting

If two subpages share the same name, it is important, that the first
page gets a proper name, and the second one follows the uniqueInSite pattern.

Also, sorting by workspaces (live first), PID and then sorting seems to be
just logical. I wonder why I did not add this before.

Resolves: #86120
Releases: master
Change-Id: I53f279034c2c61a31b50fc973721827f0c2685ba
Reviewed-on: https://review.typo3.org/58153


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>