Merge branch '393836-remove-work-items-global-id' into 'master'

Delete fetchByIid properties in work items

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/114640



Merged-by: Phil Hughes <me@iamphill.com>
Approved-by: Phil Hughes <me@iamphill.com>
Approved-by: Janis Altherr <jaltherr@gitlab.com>
Reviewed-by: Coung Ngo <cngo@gitlab.com>
Co-authored-by: Coung Ngo <cngo@gitlab.com>