[BUGFIX] Avoid duplicate results in HMENU with workspaces

HMENU special="directory" and special="updated" did not
use PageRepository directly, which led to duplicate
entries with workspaces.

This change does not use "$cObj->exec_..." anymore
and fixes all problems.

composer req --dev typo3/testing-framework:^6.15.2

Resolves: #96226
Releases: main, 11.5
Change-Id: I595ac05981d03246eb7671c9ae072f499bff5188
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/72684


Tested-by: core-ci <typo3@b13.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Benni Mack <benni@typo3.org>