[cherry-pick][release/v0.18.0.post1] cherry-pick #2847 #2780 #2840 #2876 #2877 (#2878)

Signed-off-by: david6666666 <530634352@qq.com>
Signed-off-by: David Chen <530634352@qq.com>
Signed-off-by: WeiQing Chen <40507679+david6666666@users.noreply.github.com>

tests/entrypoints/openai_api/test_video_server.py

@@ -14,8 +14,7 @@ import time
 from types import SimpleNamespace
 
 import pytest
-from fastapi import FastAPI
-from fastapi import HTTPException
+from fastapi import FastAPI, HTTPException
 from fastapi.testclient import TestClient
 from PIL import Image
 from pytest_mock import MockerFixture
@@ -981,5 +980,3 @@ async def test_run_generation_maps_omni_request_error_to_http_exception():
         "error_type": "OutOfMemoryError",
         "detail": {"retryable": False},
     }
-
-