Fix user invite email test assertion after HTML escaping update

[JadeCara]

Description Of Changes

PR #7957 (ENG-3455) updated user_invite.html to use proper HTML attribute quoting — quoted href value and & entity — but didn't update the test assertion in message_dispatch_service_test.py. This fixes the test to match the correctly escaped template output.

Before (test expected): <a href=http://localhost:3000/login?invite_code=123&username=test>
After (test expects): <a href="http://localhost:3000/login?invite_code=123&amp;username=test">

Code Changes

• tests/ops/service/messaging/message_dispatch_service_test.py — Updated expected HTML body in test_email_dispatch_user_invite_email to match the properly escaped template

Steps to Confirm

1. Run pytest tests/ops/service/messaging/message_dispatch_service_test.py::TestMessageDispatchService::test_email_dispatch_user_invite_email
2. Test should pass
3. No change in rendering

Pre-Merge Checklist

• Issue requirements met
• All CI pipelines succeeded
• CHANGELOG.md updated
  • Updates unreleased work already in Changelog, no new entry necessary
• UX feedback:
  • No UX review needed
• Followup issues:
  • No followup issues
• Database migrations:
  • No migrations
• Documentation:
  • No documentation updates required

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2 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
fides-plus-nightly	Ignored	Preview	Apr 20, 2026 9:25pm
fides-privacy-center	Ignored		Apr 20, 2026 9:25pm

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.05%. Comparing base (e21ef4d) to head (76fad1e).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7973      +/-   ##
==========================================
+ Coverage   83.39%   85.05%   +1.65%     
==========================================
  Files         631      631              
  Lines       41213    41213              
  Branches     4807     4807              
==========================================
+ Hits        34371    35052     +681     
+ Misses       5637     5069     -568     
+ Partials     1205     1092     -113     

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