[TASK] Have more static DP in SiteHandling tests

Solves simple cases: Make some helper methods
static, call them statically, and declace
consuming data providers static.

There are more hairy cases in this section,
those will be sorted out with further patches.

Resolves: #100451
Related: #100249
Releases: main
Change-Id: I927da99a598f74819247c83f395419b6021a730e
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/78465


Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>