Merge branch 'fc-mr-pipelines-table-extract-event-hub' into 'master'

Extract eventhub out of pipelines_table

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/131568



Merged-by: Zack Cuddy <zcuddy@gitlab.com>
Approved-by: Briley Sandlin <bsandlin@gitlab.com>
Approved-by: Zack Cuddy <zcuddy@gitlab.com>
Reviewed-by: Zack Cuddy <zcuddy@gitlab.com>
Reviewed-by: Frédéric Caplette <fcaplette@gitlab.com>
Reviewed-by: Briley Sandlin <bsandlin@gitlab.com>
Co-authored-by: Frédéric Caplette <fcaplette@gitlab.com>