[Bugfix] Set temperature=0.7 in test_guided_choice_chat (vllm-project#11264)

Author: mgoin

tests/entrypoints/openai/test_chat.py

@@ -482,6 +482,7 @@ async def test_guided_choice_chat(client: openai.AsyncOpenAI,
         model=MODEL_NAME,
         messages=messages,
         max_completion_tokens=10,
+        temperature=0.7,
         extra_body=dict(guided_choice=sample_guided_choice,
                         guided_decoding_backend=guided_decoding_backend))
     choice1 = chat_completion.choices[0].message.content
@@ -496,6 +497,7 @@ async def test_guided_choice_chat(client: openai.AsyncOpenAI,
         model=MODEL_NAME,
         messages=messages,
         max_completion_tokens=10,
+        temperature=0.7,
         extra_body=dict(guided_choice=sample_guided_choice,
                         guided_decoding_backend=guided_decoding_backend))
     choice2 = chat_completion.choices[0].message.content