[TASK] PhpStorm understands EventDispatcher->dispatch()

PhpStorm now understands that PSR-14
`EventDispatcherInterface->dispatch()` returns an instance of the
first argument.

Resolves: #99929
Releases: main
Change-Id: I0fda1df8cc434b897311049fbef5fe4f1389a2e7
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/77837


Tested-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: core-ci <typo3@b13.com>