[CI] fix: notebook ci often OOM (#20199)

docs/advanced_features/vlm_query.ipynb

@@ -64,6 +64,8 @@
     "\n",
     "nest_asyncio.apply()\n",
     "\n",
+    "import sglang.test.doc_patch  # noqa: F401\n",
+    "\n",
     "model_path = \"Qwen/Qwen2.5-VL-3B-Instruct\"\n",
     "chat_template = \"qwen2-vl\"\n",
     "example_image_url = \"https://raw.githubusercontent.com/sgl-project/sglang/main/examples/assets/example_image.png\""

docs/basic_usage/offline_engine_api.ipynb

@@ -66,7 +66,7 @@
     "import asyncio\n",
     "\n",
     "import sglang as sgl\n",
-    "import sglang.test.doc_patch\n",
+    "import sglang.test.doc_patch  # noqa: F401\n",
     "from sglang.utils import async_stream_and_merge, stream_and_merge\n",
     "\n",
     "llm = sgl.Engine(model_path=\"qwen/qwen2.5-0.5b-instruct\")"