[BUGFIX] Replace PHP 7.2 deprecated each()

each() is deprecated in PHP 7.2 and has to be replaced.

Resolves: #83321
Releases: master, 8.7, 7.6
Change-Id: Ic318b50a9921cd6a55435cc9b2e0b254e61b9dbc
Reviewed-on: https://review.typo3.org/55084


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>