PM-26027: Remove the UserManagedPrivilegedApps feature flag

[david-livefront]

🎟️ Tracking

PM-26027

📔 Objective

This PR removes the UserManagedPrivilegedApps feature flag.

⏰ 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 – 3744dfdf-151f-47eb-a5fc-ebd735a196ff

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

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.26%. Comparing base (6f6aaca) to head (7d1ad7c).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5914      +/-   ##
==========================================
- Coverage   84.26%   84.26%   -0.01%     
==========================================
  Files         712      712              
  Lines       53653    53625      -28     
  Branches     7396     7387       -9     
==========================================
- Hits        45210    45186      -24     
+ Misses       5841     5837       -4     
  Partials     2602     2602              

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[david-livefront]

Thanks @SaintPatrck