Update page metadata to enable previews for work items
Summary
On legacy issues and other GitLab objects metadata is set to enable descriptive previews in other apps such as Slack. Work items show only the IID and generic details rather than an actual preview of the work item.
Work items should show, at minimum, the title, IID, description, author, and assignees in the preview to reach parity with legacy issues and epics.
Edited by Nick Leonard