PM-14934: Allow accessibility autofill to fill just a username or just a password

[david-livefront]

🎟️ Tracking

PM-14934

📔 Objective

This PR adjusts the hasFields property to allow the accessibility autofill to fill usernames or passwords in a stand-alone manner. Meaning that it could be a site with just a password or just a username.

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation or informed the documentation team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (: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

[github-actions[bot]]

Checkmarx One – Scan Summary & Details – fa05903c-ced3-468e-9202-6319ebfa0a60

No New Or Fixed Issues Found

[david-livefront]

Thanks @dseverns-livefront

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 89.01%. Comparing base (1b0bc13) to head (790d9cf). Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #4312 +/- ## ======================================= Coverage 89.01% 89.01% ======================================= Files 453 453 Lines 39001 39001 Branches 5488 5488 ======================================= Hits 34717 34717 Misses 2375 2375 Partials 1909 1909 ```

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