get_comfy_models_folders() previously filtered by startswith(models_root),
excluding extra model paths outside the main models directory. Now includes
every category with non-empty paths from folder_names_and_paths.
Amp-Thread-ID: https://ampcode.com/threads/T-019c9224-d83c-7797-8c02-e1e1ae2ee452
Co-authored-by: Amp <amp@ampcode.com>