[TASK] Unit test to cover stdWrap_brTag

Resolves: #76307
Releases: master
Change-Id: Ie75ab139102cedb6e5bc01ffb59bbf51c900dded
Reviewed-on: https://review.typo3.org/48293


Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>
Reviewed-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Tested-by: Morton Jonuschat <m.jonuschat@mojocode.de>