Okta 1177524 passkey promotion nudge

[LazarVuckovic-okta]

Description:

What

Adds handling for the new enroll-authenticator-promotion IDX remediation across v2 and v3:

• New promo title, "Create a passkey" CTA, and "Maybe later" skip link when the authenticator displayName is Passkeys.
• Passkey splash (illustration + 3-question FAQ) on the enrollment screen for Passkeys and custom displayNames.
• Shared isPromotionPasskeys / shouldShowPasskeySplash helpers in src/util/webauthnDisplayNameUtils.ts so v2/v3 stay in sync.

Scope beyond the promotion remediation

The splash also renders on the existing enroll-authenticator step when displayName is Passkeys or custom — the standard Security Key or Biometric flow is
unchanged. This matches the product ask that the visual upgrade travels with the passkey rebrand, not just with the promotion form.

Test coverage

• Unit: transformWebAuthNAuthenticator (splash/title/CTA/skip matrix across enroll, promotion, challenge) and transformWebAuthNSubmitButton (CTA copy).
• v2 view: EnrollWebauthnView_spec.js — promotion + regression guards for standard enroll.
• Renderer: PasskeyPromotionIllustration.test.tsx — aria-hidden, viewBox, currentColor cascade.
• Testcafe: EnrollAuthenticatorWebAuthnPromotion_spec.js — end-to-end shell (title, CTA, splash, skip click → /idp/idx/skip).

PR Checklist

• Have you verified the basic functionality for this change?
• Did you add tests, as appropriate, following our Automated Test guidelines?
• Did you follow our Security Best Practices?
• Did you verify the change by running downstream monolith artifact? (Provide link to build below)
• Does this PR include noticeable changes to the UI? (If yes, attach screenshots/video below)

Issue:

• OKTA-1177524

Reviewers:

Screenshot/Video:

Gen 2:

OKTA-1177524.-.Passkey.promo.-.gen2.-.promo.screen.mov

Enroll Passkey:

Custom:

Default:

Customized color:

Gen 3:

OKTA-1177524.-.Passkey.promo.-.gen3.-.promo.screen.mov

Enroll Passkey:

Custom:

Default:

Customized color:

Downstream Monolith Build:

https://bacon-go.aue1e.saasure.net/commits?artifact=monolith&page=1&pageSize=6&sha=7761cb412d93598b3d1419f4a1d6be6fa8a85289&tab=main