Fix compatibility with Python 3.9, 3.10, fix Configuration class declaration issue

tests/distributed/test_embedded_client.py

@@ -3,6 +3,7 @@ import asyncio
 import pytest
 import torch
 
+from comfy.cli_args_types import Configuration
 from comfy.client.embedded_comfy_client import EmbeddedComfyClient
 from comfy.client.sdxl_with_refiner_workflow import sdxl_workflow_with_refiner
 
@@ -34,6 +35,14 @@ async def test_embedded_comfy():
         outputs = await client.queue_prompt(prompt)
         assert outputs["13"]["images"][0]["abs_path"] is not None
 
+@pytest.mark.asyncio
+async def test_configuration_options():
+    config = Configuration()
+    async with EmbeddedComfyClient(configuration=config) as client:
+        prompt = sdxl_workflow_with_refiner("test")
+        outputs = await client.queue_prompt(prompt)
+        assert outputs["13"]["images"][0]["abs_path"] is not None
+
 @pytest.mark.asyncio
 async def test_multithreaded_comfy():
     async with EmbeddedComfyClient(max_workers=2) as client: