[BUGFIX] Indexed Search: Pass `freeIndexUid` to `pageBrowsing` ViewHelper

The `is:pageBrowsing` ViewHelper now receives the `freeIndexUid`
argument. Also, a typing issue in the data attribute is solved to let
JavaScript get its value.

Resolves: #102950
Releases: 12.4, 11.5
Change-Id: Ia8c6dd2bf5a61676cf9db85ef2623cf76d7dffb9
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/82668


Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Andreas Kienast <a.fernandez@scripting-base.de>
Tested-by: Andreas Kienast <a.fernandez@scripting-base.de>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Simon Schaufelberger <simonschaufi+typo3@gmail.com>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Simon Schaufelberger <simonschaufi+typo3@gmail.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>