[BUGFIX] Properly sort backend layout rows and cols

This fixes the sorting of backend layout rows
and cols in the page module, depending on TSconfig.

1. The rows are now sorted by their key again
2. Using SHARED.colPos_list does no longer override
   the order, defined in the backend layout.

Resolves: #96560
Resolves: #96609
Releases: main, 11.5
Change-Id: I9f4fce0296517686373f26a88870df2badf8672f
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/73152


Tested-by: core-ci <typo3@b13.com>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Oliver Bartsch <bo@cedev.de>