Merge branch 'fix-reindexing-cluster-refresh' into 'master'

Fix cluster reindexing document_count

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/140085



Merged-by: Siddharth Dungarwal <sdungarwal@gitlab.com>
Approved-by: Siddharth Dungarwal <sdungarwal@gitlab.com>
Approved-by: Terri Chu <tchu@gitlab.com>
Co-authored-by: Dmitry Gruzd <dgruzd@gitlab.com>