refactor(modules): extract assertStatus test helper

[jackby03]

🎯 What: Extracted duplicate assertStatus helper functions across 11 module test files to testutil.AssertStatus in internal/modules/util/testutil.
💡 Why: Reduces repetitive boilerplate in test files and improves code maintainability.
✅ Verification: Added unit tests in internal/modules/util/testutil/testutil_test.go and ran go test ./internal/modules/....
✨ Result: Clean, centralized status assertion test helper across all hardening module tests.

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PR created automatically by Jules for task 10631090248956591741 started by @jackby03

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