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

Add and backfill project_id for packages_nuget_metadata

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/167607



Merged-by: Sashi Kumar Kumaresan <skumar@gitlab.com>
Approved-by: Carla Drago <cdrago@gitlab.com>
Approved-by: Panos Kanellidis <pkanellidis@gitlab.com>
Approved-by: Michał Zając <mzajac@gitlab.com>
Approved-by: Sashi Kumar Kumaresan <skumar@gitlab.com>
Co-authored-by: Shubham Kumar <shukumar@gitlab.com>