useInputMeshUvs is broken.

It seems useInputMeshUvs is broken.

The variable is located here: https://github.com/jpcy/xatlas/blob/f700c7790aaa030e794b52ba7791a05c085faf0c/source/xatlas/xatlas.h#L190

![image](https://github.com/user-attachments/assets/8672514e-ee7e-4c64-b1a9-25a4ab36cb3a)
![image](https://github.com/user-attachments/assets/9a997725-86f7-4691-b861-033b592321d1)

