Auto-swap phone number for CC for users from Telesign-blocked countries

Closes gitlab-org/modelops/anti-abuse/team-tasks#556

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/142788



Merged-by: Drew Blessing <drew@gitlab.com>
Approved-by: Alex Pennells <apennells@gitlab.com>
Approved-by: Ian Anderson <ianderson@gitlab.com>
Approved-by: Mark Chao <mchao@gitlab.com>
Approved-by: Enrique Alcántara <ealcantara@gitlab.com>
Approved-by: Drew Blessing <drew@gitlab.com>
Reviewed-by: Mark Chao <mchao@gitlab.com>
Reviewed-by: Ian Anderson <ianderson@gitlab.com>
Reviewed-by: Alex Pennells <apennells@gitlab.com>
Co-authored-by: Eugie Limpin <elimpin@gitlab.com>