[BUGFIX] Fix „templates“ of Upgrade Wizards

Due to a wrong change on the template container, the upgrade wizards
broke. This change recovers the functionality.

Resolves: #85460
Related: #85455
Releases: master
Change-Id: Iac97a9fac50fb7d7df60f163ba334d0f0012f1aa
Reviewed-on: https://review.typo3.org/57455


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Mathias Brodala <mbrodala@pagemachine.de>
Tested-by: Mathias Brodala <mbrodala@pagemachine.de>
Reviewed-by: Daniel Goerz <ervaude@gmail.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>