[BUGFIX] Avoid undefined property in extbase

Property setValidatedInstancesContainer does not exist
in ObjectValidatorInterface and its implementations and
is never read in extbase since ever. Drop it.

Change-Id: I64b5e1c4e297322fb057f2c6a1cf6f1f8103b90e
Resolves: #98031
Releases: main, 11.5
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/75300


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