[TASK] Make search levels in live search and list search consistent

Live search searches through the whole system, while list search
is limited to four levels.
Solution:
* Add default pageTS for search levels
* Live search "Show all" now uses "-1" for infinite search

Resolves: #70849
Releases: master
Change-Id: Ibf8b043da26e58bbe0df18fb2013934da5ec64f3
Reviewed-on: https://review.typo3.org/44171


Reviewed-by: Daniel Maier <dani-maier@gmx.de>
Tested-by: Daniel Maier <dani-maier@gmx.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>