[TASK] Improve property type annotations for GifBuilder

Resolves: #101978
Releases: main
Change-Id: Iba3e449c60e82c1f5d379fb52de5e71c82a0e74c
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/81110


Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Nikita Hovratov <nikita.h@live.de>
Reviewed-by: Nikita Hovratov <nikita.h@live.de>
Tested-by: core-ci <typo3@b13.com>