When converting a dwg drawing of a polygon with arcs to GeoJSON, the arcs are missing.

When converting a dwg drawing of a polygon with arcs to GeoJSON, the arcs are missing.

<img width="591" height="507" alt="Image" src="https://github.com/user-attachments/assets/d636b754-72cc-43ef-9da3-8033125d82ce" />

<img width="665" height="523" alt="Image" src="https://github.com/user-attachments/assets/8483ff7a-c07d-4ba2-a051-105a29bc05c6" />