Merge branch 'vs/replace-empty-state-mr-svg' into 'master'

Replace old image with SVG for empty MR state

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/112318



Merged-by: Coung Ngo <cngo@gitlab.com>
Approved-by: Laura Meckley <lmeckley@gitlab.com>
Approved-by: Matthew Nearents <mnearents@gitlab.com>
Approved-by: Coung Ngo <cngo@gitlab.com>
Reviewed-by: Coung Ngo <cngo@gitlab.com>
Co-authored-by: Vitaly Slobodin <vslobodin@gitlab.com>