[PM-10318] Add organization user deletion and leaving events to EventService

[r-tome]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-10338

📔 Objective

Add organization user deletion and leaving events to EventService.

📸 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

[github-actions]

Checkmarx One – Scan Summary & Details – 54a899c3-83b4-4a4e-aee0-2b4645fe1a24

New Issues

Severity	Issue	Source File / Package	Checkmarx Insight
	Client_Privacy_Violation	/libs/vault/src/cipher-view/cipher-view.component.ts: 46	Attack Vector
	Client_Privacy_Violation	/libs/vault/src/cipher-view/cipher-view.component.ts: 46	Attack Vector
	Client_Privacy_Violation	/libs/vault/src/cipher-view/cipher-view.component.ts: 47	Attack Vector
	Client_Privacy_Violation	/libs/vault/src/cipher-view/cipher-view.component.ts: 47	Attack Vector
	Client_Privacy_Violation	/apps/web/src/app/tools/access-intelligence/all-applications.component.html: 99	Attack Vector
	Client_Privacy_Violation	/apps/web/src/app/tools/access-intelligence/all-applications.component.html: 94	Attack Vector
	Client_Privacy_Violation	/apps/web/src/app/tools/access-intelligence/critical-applications.component.html: 85	Attack Vector
	Client_Privacy_Violation	/apps/web/src/app/tools/access-intelligence/critical-applications.component.html: 80	Attack Vector
	Missing_HSTS_Header	/libs/common/src/services/api.service.ts: 228	Attack Vector

[codecov]

Codecov Report

Attention: Patch coverage is 25.00000% with 6 lines in your changes missing coverage. Please review.

Project coverage is 33.62%. Comparing base (f5e6fc8) to head (973bb75).
Report is 21 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
apps/web/src/app/core/event.service.ts	0.00%	6 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #11554   +/-   ##
=======================================
  Coverage   33.62%   33.62%           
=======================================
  Files        2825     2825           
  Lines       88200    88208    +8     
  Branches    16800    16800           
=======================================
+ Hits        29655    29664    +9     
+ Misses      56223    56222    -1     
  Partials     2322     2322           

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