Python: [BREAKING] Renamed create_agent to as_agent (#3249)

* Renamed create_agent to as_agent

* Override for as_agent

* Added override

python/samples/getting_started/workflows/state-management/shared_states_with_agents.py

@@ -157,7 +157,7 @@ async def handle_spam(detection: DetectionResult, ctx: WorkflowContext[Never, st
 
 def create_spam_detection_agent() -> ChatAgent:
     """Creates a spam detection agent."""
-    return AzureOpenAIChatClient(credential=AzureCliCredential()).create_agent(
+    return AzureOpenAIChatClient(credential=AzureCliCredential()).as_agent(
         instructions=(
             "You are a spam detection assistant that identifies spam emails. "
             "Always return JSON with fields is_spam (bool) and reason (string)."
@@ -170,7 +170,7 @@ def create_spam_detection_agent() -> ChatAgent:
 
 def create_email_assistant_agent() -> ChatAgent:
     """Creates an email assistant agent."""
-    return AzureOpenAIChatClient(credential=AzureCliCredential()).create_agent(
+    return AzureOpenAIChatClient(credential=AzureCliCredential()).as_agent(
         instructions=(
             "You are an email assistant that helps users draft responses to emails with professionalism. "
             "Return JSON with a single field 'response' containing the drafted reply."

python/samples/getting_started/workflows/state-management/workflow_kwargs.py

@@ -73,7 +73,7 @@ async def main() -> None:
     chat_client = OpenAIChatClient()
 
     # Create agent with tools that use kwargs
-    agent = chat_client.create_agent(
+    agent = chat_client.as_agent(
         name="assistant",
         instructions=(
             "You are a helpful assistant. Use the available tools to help users. "