[BUGFIX] Add `#[Controller]` attribute to `EditController`

The `EditController` uses DI since #102213 and must
therefore be declared public, which is done by setting
the corresponding `#[Controller]` attribute.

Resolves: #102597
Related: #102213
Releases: main
Change-Id: I65071ffd0d7318421515a2b0f52717b20721146b
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/82081


Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: core-ci <typo3@b13.com>