TEXT Modalities doesn't work with gemini-live-2.5-flash-preview-native-audio-09-2025

#### Environment details

- Programming language: Python
- OS: macOS
- Language runtime version: 3.10
- Package version: 1.52.0

#### Steps to reproduce

```python
import asyncio

from dotenv import load_dotenv
from google import genai

load_dotenv(".env")

client = genai.Client(
vertexai=True,
location="us-central1",
)

model = "gemini-live-2.5-flash-preview-native-audio-09-2025"
config = {"response_modalities": ["TEXT"]}

async def main():
async with client.aio.live.connect(model=model, config=config) as session:
message = "Hello, how are you?"
await session.send_client_content(turns=message, turn_complete=True)

if __name__ == "__main__":
asyncio.run(main())
```

Error message:
```
raise self.protocol.close_exc from self.recv_exc
websockets.exceptions.ConnectionClosedError: received 1007 (invalid frame payload data) Request contains an invalid argument.; then sent 1007 (invalid frame payload data) Request contains an invalid argument.
```