Merge branch 'el-refactor-arkose-token-verification-code' into 'master'

Extract Arkose token verification logic to a concern

Closes gitlab-org/modelops/anti-abuse/team-tasks#384

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/141466



Merged-by: Aaron Huntsman <ahuntsman@gitlab.com>
Approved-by: Hinam Mehra <hmehra@gitlab.com>
Approved-by: Aaron Huntsman <ahuntsman@gitlab.com>
Co-authored-by: Eugie Limpin <elimpin@gitlab.com>