[BUGFIX] Enhance accessibility in recycler module

This patch addresses two key accessibility issues in the recycler
module: it adds a caption element to the table for better context
and provides labels for dropdown icons used in multi-selection,
ensuring screen reader compatibility.

Resolves: #103764
Releases: main, 12.4
Change-Id: Ia8b839cbc438396c8438969087d225c37a479bcf
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/84107


Tested-by: Benjamin Franzke <ben@bnf.dev>
Reviewed-by: Benjamin Franzke <ben@bnf.dev>
Tested-by: core-ci <typo3@b13.com>