fix: remove duplicate #[cfg(test)] attribute before mod tests_stress

[nazteeemba]

Summary

Package Affected

• SDK (@iln/sdk)
• CLI (@iln/cli)
• Indexer (@iln/indexer)
• Notifications
• Smart Contracts (invoice_liquidity, iln_governance, iln_distribution, reputation_bonus)
• E2E Tests
• Documentation
• CI/CD

Related Issue

Closes #429

Complexity

• Trivial (typo, docs, small refactor)
• Medium (new feature, bug fix)
• High (major refactor, breaking change, security-critical)

Changes Made

Changeset Included

• Yes
• No (not needed for this change)

Test Evidence

# Example:
# cargo test
# running 15 tests
# test result: ok. 15 passed; 0 failed

Test output

Breaking Change

• Yes (migration notes below)
• No

Migration Notes

Security Considerations

Checklist

• Code follows project conventions (see CONTRIBUTING.md)
• Tests added/updated and passing
• Documentation updated (if needed)
• Commit message follows Conventional Commits
• No secrets or sensitive data in code
• Breaking changes documented (if applicable)
• Changeset added (if needed for release)

[Levi-Ojukwu]

@nazteeemba resolve workflow

[Levi-Ojukwu]

@nazteeemba Resolve workflow