Merge branch 'ph/415151/issuableItemPipelineStatusSlot' into 'master'

Added pipeline status slot to the issuable item component

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/144623



Merged-by: Natalia Tepluhina <ntepluhina@gitlab.com>
Approved-by: Natalia Tepluhina <ntepluhina@gitlab.com>
Co-authored-by: Phil Hughes <me@iamphill.com>