Merge branch 'jm-zoekt-update-used-bytes-v2' into 'master'

Update zoekt index used_storage_bytes on interval instead of callbacks

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/168668



Merged-by: John Mason <9717668-johnmason@users.noreply.gitlab.com>
Approved-by: João Pereira <jpereira@gitlab.com>
Approved-by: Adam Hegyi <ahegyi@gitlab.com>
Reviewed-by: Dmitry Gruzd <dgruzd@gitlab.com>
Reviewed-by: Terri Chu <tchu@gitlab.com>
Co-authored-by: John Mason <jmason@gitlab.com>