[BUGFIX] Adopt IRRE class toggle for hide/unhide

Clicking hide/unhide in IRRE elements doesn't change the UI anymore
because the icon class changed but not the JS.

Resolves: #63833
Releases: master
Change-Id: I2775708158d03d0fa931a89ee60d269a001692a8
Reviewed-on: http://review.typo3.org/35396
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>