[TASK] Variable type hints for makeInstance(self::class)

It seems the DynamicReturnTypePlugin for PhpStorm does
not deal with 'self::class'. Change a couple of
makeInstance() calls to hint for the returned object.

Resolves: #92876
Releases: master
Change-Id: I2cd2ad28dcd4e3baba641bdbc0dbdbc50d6bde9d
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/66699


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Oliver Bartsch <bo@cedev.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Mathias Brodala <mbrodala@pagemachine.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>