Extends the core Comfy.SnapToGrid behavior for nodes to apply to LiteGraph's LGraphGroup with the same behavior. Also, pulls out redundant rounding code into util function.
This enables local reverse-proxies to host ComfyUI on a path, eg "http://example.com/ComfyUI/" in such a way that at least everything I tested works. Without this patch, proxying ComfyUI in this way will yield errors.
Regis Gaughan, III
Alex "mcmonkey" Goodwin
missionfloyd
pythongosssss