Merge branch '456079-add-visual-indicators-for-imported-issues' into 'master'

Add "Imported" badge on issue show page

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/149876



Merged-by: Elwyn Benson <ebenson@gitlab.com>
Approved-by: Coung Ngo <cngo@gitlab.com>
Approved-by: Elwyn Benson <ebenson@gitlab.com>
Co-authored-by: Justin Ho Tuan Duong <hduong@gitlab.com>