[BUGFIX] Add aria-label to the selection options toggle button

The toggle button to open the selection options
of the multi record selection component does now
provide an aria-label to make it accessible for
screen readers.

Resolves: #104089
Releases: main, 12.4
Change-Id: I89af5e4f5a0f8dd87be5d532bdd894bd2636502e
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/84689


Reviewed-by: Oliver Bartsch <bo@cedev.de>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Oliver Bartsch <bo@cedev.de>