[TASK] Remove unnecessary brackets in GroupElement

Resolves: #102473
Releases: main, 12.4
Change-Id: Iac4b1884e5a4c4f49c3e346b96795366f5bccdd1
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/81896


Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Nikita Hovratov <nikita.h@live.de>
Tested-by: Nikita Hovratov <nikita.h@live.de>