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

Add and backfill project_id for packages_debian_project_components

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/157626



Merged-by: Tiger Watson <twatson@gitlab.com>
Approved-by: Tiger Watson <twatson@gitlab.com>
Co-authored-by: bmarjanovic <bmarjanovic@gitlab.com>