[PM-12548] Fido2 scripts should not load when user is logged out

[cagonzalezcs]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-12548

📔 Objective

The content scripts used to override the Webauthn API are being injected when a user is in a logged out state. This problem introduces an issue where we break the default Webauthn API since an un-authed user cannot respond to the overriden Webauthn API call in any manner.

The changes in this PR address that problem by reworking how we handle injecting the fido2 content scripts on load of the extension. Effectively, we should only be injecting those scripts if the user is logged in or shortly after the user logs into the browser extension.

Resolves #11199 (comment)

⏰ 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

• 👍 (:+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]

Checkmarx One – Scan Summary & Details – 6d13053d-d363-4590-a037-33823b08e3f7

No New Or Fixed Issues Found

[codecov]

Codecov Report

Attention: Patch coverage is 84.21053% with 3 lines in your changes missing coverage. Please review.

Project coverage is 33.28%. Comparing base (b6ea607) to head (7724f1d).

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...er/src/autofill/fido2/content/fido2-page-script.ts	0.00%	2 Missing ⚠️
...ido2/content/fido2-page-script-delay-append.mv2.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #11444   +/-   ##
=======================================
  Coverage   33.28%   33.28%           
=======================================
  Files        2741     2741           
  Lines       85810    85824   +14     
  Branches    16367    16370    +3     
=======================================
+ Hits        28559    28564    +5     
- Misses      54987    54997   +10     
+ Partials     2264     2263    -1     

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