Merge branch '389760-zoekt-handle-project-deletion' into 'master'

Handle project deletion by also deleting in Zoekt

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/125400



Merged-by: David Dieulivol <ddieulivol@gitlab.com>
Approved-by: Prabakaran Murugesan <pmurugesan@gitlab.com>
Approved-by: Ravi Kumar <rkumar@gitlab.com>
Approved-by: David Dieulivol <ddieulivol@gitlab.com>
Reviewed-by: Prabakaran Murugesan <pmurugesan@gitlab.com>
Co-authored-by: Dmitry Gruzd <dgruzd@gitlab.com>
Co-authored-by: Ravi Kumar <rkumar@gitlab.com>