[BUGFIX] JS: Add missing dependency on FormEngineValidation

The code must not use the nested FormEngine.Validation module
without specifying a dependency on this module as well.

Releases: master, 7.6
Resolves: #80459
Change-Id: Iaea325a679ac8bae116b33b912e3e9e2f7cd9163
Reviewed-on: https://review.typo3.org/52168


Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Thomas Hohn <thomas@hohn.dk>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Nicole Cordes <typo3@cordes.co>
Tested-by: Nicole Cordes <typo3@cordes.co>
Reviewed-by: Kay Strobach <typo3@kay-strobach.de>
Tested-by: Kay Strobach <typo3@kay-strobach.de>
Reviewed-by: Jigal van Hemert <jigal.van.hemert@typo3.org>
Tested-by: Jigal van Hemert <jigal.van.hemert@typo3.org>