[BUGFIX] Replace /s JS regex flag(modifier) with [/s/S]

to match all characters including new line.

Resolves: #83385
Releases: master
Change-Id: I5c36550ddf3503f16006800d417c819d47af7fc4
Reviewed-on: https://review.typo3.org/55157


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Nils Seinschedt <n.seinschedt@neusta.de>
Reviewed-by: Benjamin Kluge <b.kluge@neusta.de>
Tested-by: Benjamin Kluge <b.kluge@neusta.de>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>
Reviewed-by: Nicole Cordes <typo3@cordes.co>
Tested-by: Nicole Cordes <typo3@cordes.co>