[Hardening] F-06: 2FA Field Set as Password Causes Password Manager Issues.

### The required feature described as a wish

**Description:** The 2FA input is defined as type="password". Password managers treat it like a regular password field, so they may save or autofill the 2FA code. This can overwrite the stored password and lock the user out of their account. The field was likely set this way to hide the Static PIN from bystanders or during screen sharing.

**Affected Components:** Management UI

**Impact:** Password managers may replace saved passwords with 2FA codes. This can lock users out and lead them to choose weaker passwords or store them insecurely.

**Steps to Reproduce:**
- Log in to the CloudStack Management UI with a user that has 2FA enabled.
- Enter valid credentials and continue to the 2FA screen.
- Inspect the 2FA input field in the browser’s developer tools.
- Confirm it is set to type="password".

**Recommended Remediation:** Change the 2FA input field to type="number" and add autocomplete="one-time-code". This informs password managers of the field's actual meaning.

Also, consider combining the password and 2FA into a single form. This way, attackers can’t tell which part failed, making password attacks harder.

issue #13337で説明されているCloudStack Management UIの2FAログインフォームから始め、マージ済みのpull request #13723を確認して、すでに完了している作業を把握します。パスワードマネージャーが2FAフィールドを通常のパスワードではなくワンタイムコードとして識別できれば完了です。一方、フォームを組み合わせるという別の提案は、より広い検討事項として残ります。

索引モデルが issue の本文から書いたものです。