[Windows] 修复执行速度极慢/流程卡死的问题

File: hy3dgen/texgen/utils/uv_warp_utils.py

Symptom: When xatlas.parametrize() attempts to process a mesh with 1.3 million faces, there is no terminal output, CPU utilization drops to extremely low levels (~10%), and the process becomes completely unresponsive even after waiting 7+ minutes.