[TASK] Extend TypoScriptParser test cases

Resolves: #55026
Releases: 6.2
Change-Id: Ia1d03b4c3db6bb224b920b7252bd68df70053515
Reviewed-on: https://review.typo3.org/26842
Reviewed-by: Oliver Klee
Reviewed-by: Oliver Hader
Tested-by: Oliver Hader