[BUGFIX] Use `new` in ReflectionServiceTest

Resolves: #83390
Releases: master
Change-Id: I1883a855ae818295eec9cd8b4ae2baeb93eff05c
Reviewed-on: https://review.typo3.org/55164


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Sebastian Fischer <typo3@evoweb.de>
Reviewed-by: Joerg Boesche <typo3@joergboesche.de>
Tested-by: Joerg Boesche <typo3@joergboesche.de>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>