[BUGFIX] Do not reference EventDispatcher in TYPO3 Core

With Dependency Injection, the new PSR-14 based
EventDispatcher, built into TYPO3 Core should never
be exposed to our core code, since we should always
reference the EventDispatcherInterface. We do this
in almost all cases, except for a few places where
we introduced PSR-14 before DI.

Resolves: #90034
Releases: master
Change-Id: I59e74333360c98b3c2e16c1b3df6fbd8bbf450f0
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/62778


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Benni Mack <benni@typo3.org>