[PM-13026] Refactor remove and bulkremove methods to throw error if user is managed by an organization

[r-tome]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-13026

📔 Objective

Verified members should not be removed. Instead, verified members should go through the deletion flow to ensure all their individual data is properly deleted. This change will prevent accidental removals and enforce consistent deletion practices for verified members.

⏰ 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 93.75000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 42.70%. Comparing base (702a81b) to head (b711506).
Report is 8 commits behind head on main.

Files with missing lines	Patch %	Lines
...Console/Controllers/OrganizationUsersController.cs	0.00%	1 Missing ⚠️
...OrganizationUsers/RemoveOrganizationUserCommand.cs	96.77%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5034      +/-   ##
==========================================
+ Coverage   42.58%   42.70%   +0.11%     
==========================================
  Files        1406     1406              
  Lines       65074    65114      +40     
  Branches     5962     5974      +12     
==========================================
+ Hits        27715    27806      +91     
+ Misses      36131    36064      -67     
- Partials     1228     1244      +16     

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[github-actions]

Checkmarx One – Scan Summary & Details – 7e4823ad-2cf2-45b9-93a6-84996e437870

New Issues

Severity	Issue	Source File / Package	Checkmarx Insight
	CSRF	/src/Api/AdminConsole/Controllers/GroupsController.cs: 92	Attack Vector
	Heap_Inspection	/src/Core/Constants.cs: 129	Attack Vector
	Use_Of_Hardcoded_Password	/src/Core/Constants.cs: 129	Attack Vector