(gen3): Add aria labels for show password buttons

[leemchale-okta]

Description:

Fixes WCAG 2.4.6 issues (Deque audit) in the Gen3 (v3) widget where the show/hide password toggle didn't convey its purpose to screen readers.

Root cause: Odyssey's PasswordField hardcodes the toggle aria-label to "Show password" for every field, with no override prop in the version we ship (@okta/odyssey-react-mui@1.44.0). So duplicate toggles (new + re-enter password) are indistinguishable, and non-password secret fields (security answer, YubiKey) are mislabeled.

Fix:

1. transformInputPassword resolves a distinct label per field: confirmPassword → "Show re-entered password", credentials.answer → "Show answer", YubiKey → "Show YubiKey verification code", reset-password → "Show new password", everything else (incl. sign-in) → "Show password" (unchanged).
2. InputPassword.tsx applies that label to Odyssey's toggle (button[aria-controls="<name>"]); the name stays stable across show/hide (state via aria-pressed).

Sign-in flow is unaffected. All target i18n keys already existed.

Why not upgrade Odyssey? (out of scope)

Odyssey added a showPasswordToggleAriaLabel prop in 1.65.0 (OKTA-1217904), which is the clean long-term fix. But bumping 1.44 → 1.65 is a 21-minor jump, the widget runs Odyssey on Preact, and theme.ts heavily customizes Odyssey internals (+ design-tokens lockstep, dropped react-i18next) — high regression risk, its own VRT/parity effort. Too risky to bundle with a P1 a11y fix.

This is a temporary workaround. Once Odyssey ≥ 1.65.0 lands, remove the DOM override and pass showPasswordToggleAriaLabel={getTranslation(translations, 'visibilityToggleLabel')} instead — the transform logic stays identical. Code comments point to OKTA-1217904.

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? (No visual change — aria-label only.)

Issue:

• OKTA-1164538 — Password Setup
• OKTA-1164535 — Reset password
• OKTA-1164537 — Enroll Security Question
• OKTA-1164549 — Set up YubiKey
• Related: OKTA-1217904 (Odyssey prop for permanent fix)

Reviewers:

Screenshot/Video:

No visual change (accessible-name only).

Downstream Monolith Build:

[Luxu2-Okta]

LGTM, make sure you run downstream and nightly gen3, also make sure it doesn't break IE