[AC-2722] Turn on Flexible Collections v1 for self-host

[eliykat]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/AC-2722

📔 Objective

Enable Flexible Collections v1 (owner and admin restrictions) for self-host.

There are no database migrations for this one, everything is controlled via the feature flag.

📸 Screenshots

⏰ 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

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 41.02%. Comparing base (e9ecb1d) to head (4700cd0).

Files	Patch %	Lines
src/Core/Constants.cs	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4253      +/-   ##
==========================================
- Coverage   41.02%   41.02%   -0.01%     
==========================================
  Files        1246     1246              
  Lines       59888    59889       +1     
  Branches     5482     5482              
==========================================
  Hits        24572    24572              
- Misses      34186    34187       +1     
  Partials     1130     1130              

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[github-actions]

Checkmarx One – Scan Summary & Details – b61f00ad-5924-44a2-86a3-c30fc3c498a1

No New Or Fixed Issues Found