[BUGFIX] Do not inject ImageService in ImageViewHelper

The ImageViewHelper is used in install tool context,
when sending the "login successful" or "login failed"
email, while using the SystemEmail layout. Since DI is
not fully available in install tool context, the ImageService
can not be injected in the view helper.

Resolves: #94491
Releases: master
Change-Id: I7eb4e0dda0738346032cf550119c3503523df0eb
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/69726


Tested-by: core-ci <typo3@b13.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Benjamin Franzke <bfr@qbus.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Benjamin Franzke <bfr@qbus.de>