[TASK] Move iconFactory initialization out of loop

Resolves: #91459
Relates: #91302
Releases: master
Change-Id: Ic4af3247d7557a6c12a8d538e85795c507eab69a
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/64561


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Daniel Goerz <daniel.goerz@posteo.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Daniel Goerz <daniel.goerz@posteo.de>