[TASK] Move "Save and close" to the last position in scheduler

The "Save and close" link in the split button for scheduler tasks
is moved to the last position to ensure a more consistent UI.

The "Save and close" is at the last position when editing pages,
content elements etc.

Change-Id: I649dd2941a64ea11183eb5e8711b490933481c35
Resolves: #73561
Releases: master, 7.6
Reviewed-on: https://review.typo3.org/46772


Reviewed-by: Gianluigi Martino <gmartino27@gmail.com>
Tested-by: Gianluigi Martino <gmartino27@gmail.com>
Reviewed-by: Ralf Merz <info@merzilla.de>
Reviewed-by: Richard Haeser <richardhaeser@gmail.com>
Tested-by: Richard Haeser <richardhaeser@gmail.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>