[PM-26064] Fix warnings with shared components

[KatherineInCode]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-26064

📔 Objective

The various shared components in BitwardenKit have a number of warnings. Some of these are documentation requirements now that they're public; others are things like concurrency warnings that require strict concurrency mode to be on.

This also migrates BWA to use the shared UI.

📸 Screenshots

Before	After

⏰ 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 – d95bb072-c69d-4ef7-9e15-32d5e606829d

Great job! No new security vulnerabilities introduced in this pull request

[codecov]

Codecov Report

❌ Patch coverage is 87.50000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.94%. Comparing base (7ccb499) to head (32144ad).
⚠️ Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
...Application/Views/FormFields/SliderFieldView.swift	0.00%	1 Missing ⚠️
TestHelpers/Support/BaseBitwardenTestCase.swift	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2038      +/-   ##
==========================================
- Coverage   85.28%   82.94%   -2.34%     
==========================================
  Files        1690     1991     +301     
  Lines      144051   160985   +16934     
==========================================
+ Hits       122851   133532   +10681     
- Misses      21200    27453    +6253     

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