[!!!][TASK] Remove deprecated code in PageRepository

Removed interfaces:
* `\TYPO3\CMS\Core\Domain\Repository\PageRepositoryGetPageOverlayHookInterface`
* `\TYPO3\CMS\Core\Domain\Repository\PageRepositoryGetRecordOverlayHookInterface`

Changed visibility for methods and properties:
* `\TYPO3\CMS\Core\Domain\Repository\PageRepository->getRecordOverlay()`
* `\TYPO3\CMS\Core\Domain\Repository\PageRepository->where_hid_del`
* `\TYPO3\CMS\Core\Domain\Repository\PageRepository->where_groupAccess`

Resolves: #101039
Related: #100963
Related: #98303
Related: #99588
Releases: main
Change-Id: Ifdebdafbcd3a3940d1a87528e68f02115c05eb05
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/79321


Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Nikita Hovratov <nikita.h@live.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Nikita Hovratov <nikita.h@live.de>