Merge branch '432582-policies-group-project-dropdown' into 'master'

Update group_projects_dropdown.vue emit payload

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/137717



Merged-by: Miguel Rincon <mrincon@gitlab.com>
Approved-by: Ross Byrne <robyrne@gitlab.com>
Reviewed-by: Miguel Rincon <mrincon@gitlab.com>
Reviewed-by: Artur Fedorov <afedorov@gitlab.com>
Co-authored-by: Artur Fedorov <afedorov@gitlab.com>