Addressing the feedback left on a previous PR of mine: https://github.com/zed-industries/zed/pull/46663. I feel like this is worthy of a setting. Note, however, that this does not apply to typing `ctrl-c` in the terminal from within the agent panel; this is purely controlling what happens when you click on the "Stop" button in the terminal tool call card. Release Notes: - Agent: Added a setting for controlling the behavior of the stop button in the terminal tool call card (between cancelling the command to run and the thread, or just the command).