Merge branch 'mokhax/29/count-query' into 'master'

Switch to using an EXISTS query

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/118844



Merged-by: Michał Zając <mzajac@gitlab.com>
Approved-by: Adam Hegyi <ahegyi@gitlab.com>
Approved-by: Michał Zając <mzajac@gitlab.com>
Co-authored-by: mo khan <mo@mokhan.ca>