[PM-24633] - Nested collections displaying incorrectly across vaults due to similar parent collection names.

[jaasen-livefront]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-24633

📔 Objective

This PR fixes another bug related to the original one regarding how child nodes are collected for our collection filters, which they were not previously grouping under the correct collection if there were collections with duplicate names across orgs.

📸 Screenshots

Screen.Recording.2025-09-25.at.1.42.39.PM.mov

⏰ 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 – b23899ee-d98a-49c0-a63e-6fbc58f8cf79

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

[codecov]

Codecov Report

❌ Patch coverage is 92.30769% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 38.30%. Comparing base (24f07dc) to head (1578f44).
⚠️ Report is 76 commits behind head on main.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...rganizations/collections/utils/collection-utils.ts	92.30%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #16601      +/-   ##
==========================================
- Coverage   38.30%   38.30%   -0.01%     
==========================================
  Files        3403     3402       -1     
  Lines       97566    97572       +6     
  Branches    14688    14689       +1     
==========================================
+ Hits        37377    37379       +2     
- Misses      58561    58565       +4     
  Partials     1628     1628              

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