[BUGFIX] Keep classes in recordlist in workspaces

Workspace overlays modify the CSS classes which are used in the record
list. However the class `t3js-entity` is also used for JS magic and needs
always be applied.

Resolves: #86933
Releases: master, 9.5
Change-Id: I0ea1f4ea0ed5bc3b48eee4563e75d2c1d013a32c
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63943


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Susanne Moog <look@susi.dev>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Joerg Kummer <typo3@enobe.de>
Reviewed-by: Susanne Moog <look@susi.dev>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>