Merge branch 'backfill-desired-sharding-key-small-table-remote_development_agent_configs' into 'master' 

Add and backfill project_id for remote_development_agent_configs

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/154773



Merged-by: Alper Akgun <aakgun@gitlab.com>
Approved-by: Chad Woolley <cwoolley@gitlab.com>
Co-authored-by: Manoj M J <mmj@gitlab.com>