CI: Test Suite failing on PRs (stabilize and fix)

Observed failing check: Test Suite on PR #16. Link: https://github.com/adhit-r/niyama-policy-as-code/actions/runs/19094017272 (job: Test Suite).

Acceptance Criteria:
- Identify root cause from logs
- Reproduce locally and add tests
- Fix regression(s) and flaky tests if any
- Ensure CI is green on PRs and main

Deliverables:
- PR(s) with fixes
- Notes on root cause in issue comments

Assignees: @adhit-r
Labels: ci, tests, bug

Start with the linked Test Suite job for PR #16 and inspect its logs to identify the failing check's root cause. Reproduce the failure locally, add regression or flakiness tests as needed, and verify that CI is green on pull requests and main; record the root cause in the issue comments.

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