Closing a window, closing or switching a project, or quitting while Run/Debug sessions are still running now asks before terminating them (Terminate / Cancel / Don't ask again, sharing run.confirmTerminate with the Run tab prompt). Run publishes its live sessions through a RunningProcessesProvider contribution, so the close guard collects them without importing the run feature; the prompt comes before the unsaved-changes step so cancelling never discards edits.
Closes#1433
Co-authored-by: ppxb <[email protected]>
