### Extended Description
This commit addresses the AttributeError in the LoadVideosFromFolder node from ComfyUI-KJNodes, where the VHS (VideoHelperSuite) module lacked the 'load_video_nodes' attribute. The issue arose due to inconsistent module naming and import failures on Windows systems.
#### Key Changes:
- Improved `__init__` method: Simplified the fallback logic for importing VHS modules. Added case-insensitive checks for module names in `sys.modules` to handle platform-specific import variations (e.g., "ComfyUI-VideoHelperSuite" vs. "comfyui-videohelpersuite"). This ensures robust loading of the `videohelpersuite` submodule across different environments.
- Optimized `load_video` method:
- Changed `VIDEO_EXTS` from a set to a list for simplicity (no performance impact for small collections).
- Moved file processing logic (e.g., `root = kwargs['video']`, directory scanning, and video list preparation).
#### Testing:
- Verified that the node now correctly imports VHS modules without errors.
- The original order (from os.listdir()) was clip1, clip3, clip2 (unsorted).
After applying natural sorting with _natural_key, the order becomes clip1, clip2, clip3 (correct numerical order).
This resolves the import issues reported in the KJNodes repository and improves the overall reliability of video loading features.
VideoHelperSuite import fails on Windows even when VHS is properly
installed, due to custom node module names being stored as full file
paths for some reason.
Add fallback to sys.modules search when standard imports fail.
