[TASK] Remove leftover ProphecyTrait in ResolverTest

Resolves: #99253
Related: #98760
Releases: main
Change-Id: I1cdfd3902dad70bff2eeadfcd1a0eae2d8a6b644
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/76886


Tested-by: core-ci <typo3@b13.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>