Merge branch 'psk-migrate-count-to-internal-events-without-redis-migration' into 'master'

Migrate total metric to internal events and keep legacy key

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/143495



Merged-by: Vasilii Iakliushin <viakliushin@gitlab.com>
Approved-by: Jonas Larsen <jlarsen@gitlab.com>
Approved-by: Sarah Yasonik <syasonik@gitlab.com>
Approved-by: Vasilii Iakliushin <viakliushin@gitlab.com>
Reviewed-by: Vasilii Iakliushin <viakliushin@gitlab.com>
Reviewed-by: Sarah Yasonik <syasonik@gitlab.com>
Reviewed-by: Sean Arnold <sarnold@gitlab.com>
Reviewed-by: Jonas Larsen <jlarsen@gitlab.com>
Co-authored-by: Sean Arnold <sarnold@gitlab.com>
Co-authored-by: Piotr Skorupa <pskorupa@gitlab.com>
Co-authored-by: DANGER_GITLAB_API_TOKEN <project_278964_bot_445da1b60fc7336b6b6776383134d10f@noreply.gitlab.com>