fix: incorrect NotificationFromServer method name mapping

[hashemix]

📌 Summary

Fixed incorrect method name mappings in NotificationFromServer::method() that caused all notification types (except CancelledNotification) to incorrectly return CancelledNotification's method value.

🔍 Related Issues

• incorrect NotificationFromServer method name mapping #110

✨ Changes Made

• Corrected NotificationFromServer::method() in both draft/schema_utils.rs and 2025_11_25/schema_utils.rs

🛠️ Testing Steps

Run the existing test suite to verify the fix doesn't break any functionality.

./scripts/run_test.sh                                                                                                  │
./scripts/run_clippy.sh 

💡 Additional Notes

Cargo.lock was also updated as part of cargo update or similar dependency refresh.