Fix recognizing ComfyNodeV3 class by using issubclass, removed override decorator as it was only introduced in py3.12

comfy_api/v3/io.py

@@ -1,5 +1,5 @@
 from __future__ import annotations
-from typing import Any, Literal, TYPE_CHECKING, TypeVar, Callable, Optional, cast, override
+from typing import Any, Literal, TYPE_CHECKING, TypeVar, Callable, Optional, cast
 from enum import Enum
 from abc import ABC, abstractmethod
 from dataclasses import dataclass, asdict
@@ -561,7 +561,6 @@ class MultiType:
                 str_types.insert(0, self.input_override.get_io_type_V1())
             return ",".join(list(dict.fromkeys(str_types)))
         
-        @override
         def as_dict_V1(self):
             if self.input_override is not None:
                 return self.input_override.as_dict_V1() | super().as_dict_V1()

comfy_extras/nodes_v3_test.py

@@ -36,7 +36,7 @@ class V3TestNode(io.ComfyNodeV3):
                 io.Image.Input("image", display_name="new_image"),
                 XYZ.Input("xyz", optional=True),
                 io.Custom("JKL").Input("jkl", optional=True),
-                io.Mask.Input("mask", optional=True),
+                io.Mask.Input("mask", display_name="mask haha", optional=True),
                 io.Int.Input("some_int", display_name="new_name", min=0, max=127, default=42,
                              tooltip="My tooltip 😎", display_mode=io.NumberDisplay.slider),
                 io.Combo.Input("combo", options=["a", "b", "c"], tooltip="This is a combo input"),

server.py

@@ -555,7 +555,7 @@ class PromptServer():
 
         def node_info(node_class):
             obj_class = nodes.NODE_CLASS_MAPPINGS[node_class]
-            if isinstance(obj_class, ComfyNodeV3):
+            if issubclass(obj_class, ComfyNodeV3):
                 return obj_class.GET_NODE_INFO_V1()
             info = {}
             info['input'] = obj_class.INPUT_TYPES()