rabbitmq - chore: adding in test coverage

[jaredwray]

Please check if the PR fulfills these requirements

• Followed the Contributing and Code of Conduct guidelines.
• Tests for the changes have been added (for bug fixes/features) with 100% code coverage.

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
rabbitmq - chore: adding in test coverage

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (70115d3) to head (328b962).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #185   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           10        10           
  Lines         1266      1264    -2     
  Branches       231       231           
=========================================
- Hits          1266      1264    -2     

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[gemini-code-assist]

Code Review

This pull request introduces v8 ignore markers to an auto-reject block in the RabbitMQ task provider and adds several edge-case tests covering connection idempotency, timeout behaviors, and multiple handler rejections. Feedback suggests removing the coverage ignore markers in favor of explicit error-path testing, refactoring tests to use the public dequeue API instead of accessing private members, and adding assertions to ensure that side effects like dead-lettering occur only once.