Use relative path for custom/extra node module name (#3944)

* Fix module name for comfy extra nodes

* Use module name relative to root dir

nodes.py

@@ -1887,11 +1887,33 @@ NODE_DISPLAY_NAME_MAPPINGS = {
 
 EXTENSION_WEB_DIRS = {}
 
-def load_custom_node(module_path, ignore=set()):
-    module_name = os.path.basename(module_path)
+
+def get_module_name(module_path: str) -> str:
+    """
+    Returns the module name based on the given module path.
+    Examples:
+        get_module_name("C:/Users/username/ComfyUI/custom_nodes/my_custom_node.py") -> "custom_nodes.my_custom_node"
+        get_module_name("C:/Users/username/ComfyUI/custom_nodes/my_custom_node") -> "custom_nodes.my_custom_node"
+        get_module_name("C:/Users/username/ComfyUI/custom_nodes/my_custom_node/") -> "custom_nodes.my_custom_node"
+        get_module_name("C:/Users/username/ComfyUI/custom_nodes/my_custom_node/__init__.py") -> "custom_nodes.my_custom_node"
+        get_module_name("C:/Users/username/ComfyUI/custom_nodes/my_custom_node/__init__") -> "custom_nodes.my_custom_node"
+        get_module_name("C:/Users/username/ComfyUI/custom_nodes/my_custom_node/__init__/") -> "custom_nodes.my_custom_node"
+        get_module_name("C:/Users/username/ComfyUI/custom_nodes/my_custom_node.disabled") -> "custom_nodes.my
+
+    Args:
+        module_path (str): The path of the module.
+
+    Returns:
+        str: The module name.
+    """
+    relative_path = os.path.relpath(module_path, folder_paths.base_path)
     if os.path.isfile(module_path):
-        sp = os.path.splitext(module_path)
-        module_name = sp[0]
+        relative_path = os.path.splitext(relative_path)[0]
+    return relative_path.replace(os.sep, '.')
+
+
+def load_custom_node(module_path, ignore=set()):
+    module_name = get_module_name(module_path)
     try:
         logging.debug("Trying to load custom node {}".format(module_path))
         if os.path.isfile(module_path):