Merge branch '439939-epics-icon-not-showing-in-ancestry-widget' into 'master'

Show icon of work item Epics in ancestor widget

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/144754



Merged-by: Brandon Labuschagne <blabuschagne@gitlab.com>
Approved-by: Dan Mizzi-Harris <dmizzi-harris@gitlab.com>
Approved-by: Brandon Labuschagne <blabuschagne@gitlab.com>
Approved-by: Martin Čavoj <mcavoj@gitlab.com>
Reviewed-by: Martin Čavoj <mcavoj@gitlab.com>
Co-authored-by: Rajan Mistry <rmistry@gitlab.com>