[PM-26150] Add premium guard to phishing detection service

[Banrion]

🎟️ Tracking

PM-26150

📔 Objective

This pull request adds a guard around the phishing detection service to check if the user has premium.

⏰ 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 – db3aee16-9c30-4a5d-aa03-dae391c596e8

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

[codecov]

Codecov Report

❌ Patch coverage is 63.63636% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 38.28%. Comparing base (979e370) to head (9ff1322).
⚠️ Report is 67 commits behind head on main.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...g-detection/services/phishing-detection.service.ts	63.63%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #16602      +/-   ##
==========================================
- Coverage   38.29%   38.28%   -0.01%     
==========================================
  Files        3404     3404              
  Lines       97591    97597       +6     
  Branches    14692    14693       +1     
==========================================
- Hits        37373    37369       -4     
- Misses      58591    58602      +11     
+ Partials     1627     1626       -1     

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[bw-ghapp]

Changes in this PR impact the Autofill experience of the browser client

BIT has tested the core experience with these changes and the feature flag configuration used by vault.bitwarden.com.

✅ Fortunately, these BIT tests have passed! 🎉

[bw-ghapp]

Changes in this PR impact the Autofill experience of the browser client

BIT has tested the core experience with these changes and all feature flags disabled.

✅ Fortunately, these BIT tests have passed! 🎉