[TASK] Refactor & streamline TypoLinkViewHelper implementations

* avoid assigning and forwarding multiple variables
* preparation for further enhancements of view helpers
* Uri UnitTest case mostly tested TypoLinkCodecService
  (it was a FunctionalTest) and to 1/3 a simple additionalParams case
* Link UnitTest case mostly tested TypoLinkCodecService
  (it was a FunctionalTest)

Resolves: #90022
Releases: master
Change-Id: If65e42d4ca8085855f3f335d1eb2604be9a36fe0
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/62775


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>