Merge branch '457009-add-group-work-item-list-empty-states' into 'master'

Add empty states to new epics list

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/153129



Merged-by: Peter Hegman <phegman@gitlab.com>
Approved-by: Nick Leonard <nleonard@gitlab.com>
Approved-by: Kos Palchyk <kpalchyk@gitlab.com>
Approved-by: Peter Hegman <phegman@gitlab.com>
Reviewed-by: Heinrich Lee Yu <heinrich@gitlab.com>
Reviewed-by: Coung Ngo <cngo@gitlab.com>
Reviewed-by: Peter Hegman <phegman@gitlab.com>
Reviewed-by: Jannik Lehmann <jlehmann@gitlab.com>
Reviewed-by: Kos Palchyk <kpalchyk@gitlab.com>
Co-authored-by: Coung Ngo <cngo@gitlab.com>