Stop generation in adk web

[sdivakarrajesh]

Is your feature request related to a problem? Please describe. There is no way to stop an ongoing generation in the agents on the "adk web" when you realize that the progress is not in the direction you intended

Describe the solution you'd like A stop button to interrupt

Describe alternatives you've considered Use a database service session and kill adk web and start again

Additional context

[wyf7107]

We will look into this, thanks for the request, this is useful