Are the currentMode StateFlow currently reliable?

When I listen for mode changes using `ClientSession#currentMode`, I don’t receive any `currentMode` change event even after calling `setModel` to switch the model. From the code below, it seems this might not be supported yet?

<img width="669" height="322" alt="Image" src="https://github.com/user-attachments/assets/266ea457-6cdf-4ec2-8b5c-2748a2951e49" />