initialize_from_trained_3dgs setting

[auindoeee]

why initialize_from_trained_3dgs=True in coarse_density.py/coarse_sdf.py but initialize_from_trained_3dgs=False in refine.py？Whether the point cloud results using SfM point cloud instead of 3DGS results during the refine phase affect the effect of the refined_sugar_model? Thanks for great work!