BuiltInCodeExecutor is not working #898

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Describe the bug
BuiltInCodeExecutor when imported from from google.adk.code_executors and added inside Agent declaration like below:
code_agent = LlmAgent(
name=AGENT_NAME,
model=GEMINI_MODEL,
executor=[BuiltInCodeExecutor],
instruction="""You are a calculator agent.
When given a mathematical expression, write and execute Python code to calculate the result.
Return only the final numerical result as plain text, without markdown or code blocks.
""",
description="Executes Python code to perform calculations.",
)
Its throwing the error: Extra inputs are not permitted [type=extra_forbidden, input_value=[<class 'google.adk.code_...r.BuiltInCodeExecutor'>], input_type=list]
For further information visit https://errors.pydantic.dev/2.10/v/extra_forbidden

To Reproduce
Steps to reproduce the behavior:

1. Install google-adk
2. Import BuiltInCodeExecutor from google.adk.code_executors and use it like mentioned in the description
3. Compile and Run
4. See error

Expected behavior
There should be no errors and should be able to use BuiltInCodeExecutor as mentioned in the adk docs.

Screenshots

Desktop (please complete the following information):

• OS: Windows 11
• Python version(python -V): 3.11.3
• ADK version(pip show google-adk): 1.0.0

Additional context
Add any other context about the problem here.