Add error handling for failed reCAPTCHA execute

[aduth]

🛠 Summary of changes

Improves the behavior of reCAPTCHA submit buttons to ensure that a misconfigured reCAPTCHA environment does not prevent form submission.

Ideally this should never happen, since we would configure an environment correctly, but this adds additional resilience to handle if it were misconfigured. Prior to these changes, it'd be very hard to tell that there was an issue, because we would not receive events corresponding to the submission.

📜 Testing Plan

Validate that if reCAPTCHA is misconfigured, you're still able to sign in.

Configure reCAPTCHA in a way that uses invalid credentials:

# config/application.yml
development:
  recaptcha_site_key: 'test'
  recaptcha_enterprise_api_key: 'test'
  recaptcha_enterprise_project_id: 'test'
  recaptcha_mock_validator: false
  sign_in_recaptcha_score_threshold: 0.3
  sign_in_recaptcha_percent_tested: 100

1. In a separate terminal process, run make watch_events
2. In a private browsing window, go to http://localhost:3000
3. Enter email and password
4. Click "Sign in"

Before:

• As a user, the submit button shows as stuck spinning
• In logs, there are no events received

After:

• As a user, you're redirected to MFA
• In logs:
  • There is a "reCAPTCHA verify result received" event with "PERMISSION_DENIED" error and "evaluated_as_valid": true property
  • There is a "Email and Password Authentication" event with "captcha_validation_performed": true and "valid_captcha_result": true
  • It can't be easily validated, but the error will also be logged to NewRelic

👀 Screenshots

Before	After
	(Redirected to MFA)

[kevinsmaster5]

Looks good. Works as expected in local testing.