🧪 test: add missing error test in JWT refresh verify

[Adityavanjre]

🎯 What: The testing gap addressed: Missing unit test for auth.service.ts to cover the scenario where jwtService.verify throws an error.
📊 Coverage: Now tests the error condition when invalid or expired refresh tokens are passed to refreshSession, ensuring UnauthorizedException is properly thrown with the correct message.
✨ Result: Test coverage improved for auth.service.ts and the refreshSession method's exception handling logic is properly verified to catch bugs.

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PR created automatically by Jules for task 2936404923186085799 started by @Adityavanjre

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📥 Commits

Reviewing files that changed from the base of the PR and between 6051811 and 093f358.

📒 Files selected for processing (1)

• nexus/backend/src/auth/auth.service.spec.ts

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