LG-14887: Log action name with reCAPTCHA assessment result received

[aduth]

🎫 Ticket

LG-14887

🛠 Summary of changes

Updates reCAPTCHA analytics logging to include the expected "action" name, so that we can more clearly differentiate reCAPTCHA results between sign-in and phone setup.

📜 Testing Plan

1. In a separate terminal process, run make watch_events
2. Go to http://localhost:3000 in a private browsing window
3. Sign in to an account
4. In the make watch_events output, find the event for "reCAPTCHA verify result received", and observe the expected properties.event_properties.recaptcha_action: 'sign_in'
5. Optionally, repeat these same steps for the phone setup flow for international numbers, and verify the expected value of phone_setup