Python: Update AzureAIAgent sample (#11175)

### Motivation and Context

Following the latest updates for the Common Agent Invocation API
feature, one AzureAIAgent sample was not configured properly.

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### Description

Update the sample so the response doesn't show twice. Should print the
agent name and then the response.

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### Contribution Checklist

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- [X] The code builds clean without any errors or warnings
- [X] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
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Author: moonbox3

python/samples/getting_started_with_agents/azure_ai_agent/step1_azure_ai_agent.py

@@ -57,7 +57,7 @@ async def main() -> None:
                 print(f"# User: {user_input}")
                 # 4. Invoke the agent with the specified message for response
                 response = await agent.get_response(messages=user_input, thread=thread)
-                print(f"# {response.content}: {response}")
+                print(f"# {response.name}: {response}")
                 thread = response.thread
         finally:
             # 6. Cleanup: Delete the thread and agent

python/samples/learn_resources/agent_docs/chat_agent.py

@@ -75,7 +75,9 @@ async def main():
             is_complete = True
             break
 
-        async for response in agent.invoke(messages=user_input, thread=thread):
+        arguments = KernelArguments(now=datetime.now().strftime("%Y-%m-%d %H:%M"))
+
+        async for response in agent.invoke(messages=user_input, thread=thread, arguments=arguments):
             print(f"{response.content}")
             thread = response.thread