Python: [BREAKING] changed AIFunction to FunctionTool and @ai_function to @tool (#3413)

* changed AIFunction to FunctionTool and @ai_function to @tool

* test and mypy fixes

* mypy fix

* switch function tool to always_require

* fix noop

* fix github copilot imports

* test fixes

* fix ollama test

* fixes for tests

* fix tests

* reverted change to always_require and extended timeout

* fix test

python/packages/azure-ai/tests/test_azure_ai_client.py

@@ -22,6 +22,7 @@ from agent_framework import (
     HostedMCPTool,
     HostedWebSearchTool,
     Role,
+    tool,
 )
 from agent_framework.exceptions import ServiceInitializationError
 from azure.ai.projects.aio import AIProjectClient
@@ -1025,6 +1026,7 @@ def test_from_azure_ai_tools() -> None:
 # region Integration Tests
 
 
+@tool(approval_mode="never_require")
 def get_weather(
     location: Annotated[str, Field(description="The location to get the weather for.")],
 ) -> str: