Merge branch '332317-dequarantine-issue-header-search' into 'master'

Dequarantine issue header search spec

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/175039



Merged-by: John Mason <9717668-johnmason@users.noreply.gitlab.com>
Approved-by: Surabhi Suman <ssuman@gitlab.com>
Approved-by: John Mason <9717668-johnmason@users.noreply.gitlab.com>
Reviewed-by: Surabhi Suman <ssuman@gitlab.com>
Co-authored-by: Changzheng Liu <cliu@gitlab.com>