[PM-10678] Display all passkeys and accounts in OS prompt

[SaintPatrck]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-10678

📔 Objective

Extract credential selection and authentication to a dedicated View.

📸 Screenshots

Scenario	Before	After
All accounts locked	Cell
All accounts locked (Sign-in options)	Cell
All accounts unlocked	Cell
All accounts unlocked (Sign-in options)	Cell
Checked all accounts	Cell
Checked all accounts (Sign-in options)	Cell
User verification	Cell

⏰ 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]

Checkmarx One – Scan Summary & Details – 0829ee5f-c2ea-4334-87b1-f29ba0d7fc17

No New Or Fixed Issues Found

[codecov]

Codecov Report

Attention: Patch coverage is 68.47361% with 221 lines in your changes missing coverage. Please review.

Project coverage is 88.42%. Comparing base (f26374a) to head (3c616c8).

Files with missing lines	Patch %	Lines
...m/x8bit/bitwarden/ui/autofill/fido2/Fido2Screen.kt	0.00%	95 Missing ⚠️
.../ui/autofill/fido2/handlers/Fido2DialogHandlers.kt	0.00%	38 Missing ⚠️
...8bit/bitwarden/ui/autofill/fido2/Fido2ViewModel.kt	93.87%	11 Missing and 13 partials ⚠️
...i/auth/feature/vaultunlock/VaultUnlockViewModel.kt	36.11%	19 Missing and 4 partials ⚠️
...ll/fido2/handlers/Fido2UserVerificationHandlers.kt	0.00%	21 Missing ⚠️
...fill/fido2/processor/Fido2ProviderProcessorImpl.kt	83.92%	4 Missing and 5 partials ⚠️
...tofill/fido2/manager/Fido2CompletionManagerImpl.kt	63.63%	8 Missing ⚠️
...n/ui/auth/feature/vaultunlock/VaultUnlockScreen.kt	84.21%	1 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3941      +/-   ##
==========================================
- Coverage   88.85%   88.42%   -0.43%     
==========================================
  Files         425      429       +4     
  Lines       34949    35451     +502     
  Branches     5114     5185      +71     
==========================================
+ Hits        31055    31349     +294     
- Misses       2112     2303     +191     
- Partials     1782     1799      +17     

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