Merge branch '467047-experiment-cleanup-signup_intent_step_one' into 'master'

Experiment Cleanup: `signup_intent_step_one`

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/157181



Merged-by: Imre Farkas <ifarkas@gitlab.com>
Approved-by: Jeff Park <jpark@gitlab.com>
Approved-by: Nicolas Dular <ndular@gitlab.com>
Approved-by: Minahil Nichols <minahilnichols@gitlab.com>
Approved-by: Paulina Sedlak-Jakubowska <psedlak-jakubowska@gitlab.com>
Approved-by: Imre Farkas <ifarkas@gitlab.com>
Reviewed-by: Nicolas Dular <ndular@gitlab.com>
Co-authored-by: rliu-gl <rliu@gitlab.com>