Populate AUTH_TOKEN_COMFY_ORG hidden input

[huchenlei]

Ref: Comfy-Org/ComfyUI_frontend#3477

Node can access this token by specifying following input:

      @classmethod
      def INPUT_TYPES(s):
        return {
          "hidden": { "auth_token": "AUTH_TOKEN_COMFY_ORG"}
        }
      def execute(self, auth_token: str):
        print(f"Auth token: {auth_token}")