[PM-11329] [chore] Add "otp" TotpFieldNames array in autofill-constants.ts

[mulderje]

Add "otp" TotpFieldNames array in autofill-constants.ts. Noticed on https://id.fedoraproject.org/login/

🎟️ Tracking

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📔 Objective

Add "otp" TotpFieldNames array in autofill-constants.ts. Noticed on https://id.fedoraproject.org/login/

As an aside, has a custom "linked" field been considered here like with passwords? I noticed at least one request on the forum, but couldn't find much here with a search.

📸 Screenshots

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⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Protected functional changes with optionality (feature flags)
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation (Confluence, contributing docs) or informed the documentation team

🦮 Reviewer guidelines

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• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes