[TASK] Re-add last-changed information to workspace module

Due to the removal of ExtJS in TYPO3 v8,
the "last changed" column in the workspaces
administration module was removed.

It is now added back to the view.

Resolves: #95769
Releases: main
Change-Id: Ie485afdd3399ded7afbf22cdc2e30366db33984d
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/78238


Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>