[BUGFIX] Load requireJS when requested

When using requireJS in FE the method loadRequireJs() is called
implicitly when requiring modules.
A refactoring introduced a regression which causes the basic
requireJS code not to be loaded anymore.

Switch the lines to make this work again.

Releases: master, 8.7
Resolves: #81046
Change-Id: Ie511116a9a01c5c4b906f1e16712afa9f023d434
Reviewed-on: https://review.typo3.org/52637


Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Johannes Kasberger <johannes.kasberger@reelworx.at>
Tested-by: Johannes Kasberger <johannes.kasberger@reelworx.at>
Reviewed-by: Thomas Hohn <thomas@hohn.dk>
Tested-by: Thomas Hohn <thomas@hohn.dk>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>