Blank SeriesDescription should not break worklist

It appears that in a situation where SeriesDescription is not initialized, the worklist will show tiny rows (still clickable). 

<img width="331" height="103" alt="Image" src="https://github.com/user-attachments/assets/dff89e33-8707-41f7-9827-6443bb3d0ab6" />
