[BUGFIX] Use correctly terminated HTML block elements

Using `<div />` as template to be used in jQuery worked previously,
but is not supported with jQuery 3.5.x anymore. Occurences are now
using correct expanded tags like `<div></div>`.

Resolves: #91367
Releases: master, 9.5
Change-Id: I088481e607b4621e28550f79f065496c89b409d1
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/64479


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Susanne Moog <look@susi.dev>
Tested-by: Sebastien Convers <sebastien.convers@agrosupdijon.fr>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
Reviewed-by: Daniel Goerz <daniel.goerz@posteo.de>
Reviewed-by: Susanne Moog <look@susi.dev>
Reviewed-by: Helmut Hummel <typo3@helhum.io>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>