[BUGFIX] Remove not working CDATA usage in JS template file

The "{" character is now wrapped into f:format.raw.

Change-Id: I472bf9f600d43bbb8a0d5d5f691109c20599fd90
Resolves: #81755
Releases: master, 8.7
Reviewed-on: https://review.typo3.org/53366


Reviewed-by: Aljoscha Weber <aweber@w-commerce.de>
Tested-by: Aljoscha Weber <aweber@w-commerce.de>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
Reviewed-by: Joerg Boesche <typo3@joergboesche.de>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>