filter image files in load image dropdown (#7573)

nodes.py

@@ -1654,6 +1654,7 @@ class LoadImage:
     def INPUT_TYPES(s):
         input_dir = folder_paths.get_input_directory()
         files = [f for f in os.listdir(input_dir) if os.path.isfile(os.path.join(input_dir, f))]
+        files = folder_paths.filter_files_content_types(files, ["image"])
         return {"required":
                     {"image": (sorted(files), {"image_upload": True})},
                 }