Update to k6chaijs on one test

[RohanNagar]

This PR addresses:

I have verified that:

• All related unit tests have been updated/created
• All related integration tests have been updated/created
• I have updated any relevant documentation in the docs/ directory
• If I made any additions/changes to the config file, I've updated the Helm chart in scripts/deploy/helm
• If necessary, I've updated CHANGELOG.md with a description of my change

Additional Notes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (223190d) to head (a8a31ad).
⚠️ Report is 131 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##              master     #2393   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity       573       573           
===========================================
  Files             64        64           
  Lines           1521      1521           
  Branches          89        89           
===========================================
  Hits            1521      1521           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.