## Summary
Record part of hCaptcha API response data to the Wikimedia Event Platform during account creation
## Background
- hCaptcha response data risk signal should be stored in the user's global session
- The normed risk signal can be retrieved in `extensions/Campaigns/includes/CampaignsSecondaryAuthenticationProvider.php` and included in in ServerSideAccountCreation event data.
- the ServerSideAccountCreation event must opt out of sending IP and user-agent data.
## User story
As staff, I want to send hCaptcha response data to the Event Platform during account creation to support analytics, while excluding IP and user-agent from this event stream.
## Acceptance criteria
- [ ] hCaptcha risk signal stored in global session
- [ ] risk signal included in ServerSideAccountCreation event
- [ ] IP and user-agent excluded should not be recorded as part of the event
Related ticket: {T377341}