[BetaTest] The workflow's `commit.py` process is still running after the IDE is closed.

[kagami-l]

When using JetBrains IDE, the IDE has been closed, but the devchat process has not ended and has been occupying the cpu all the time.

It should be a system bug of devchat. When the user closes the IDE while waiting for user input in chatmark form, commit.py is always in a waiting state and does not end. Devchat should end all related processes when the IDE exits.

TODO:

• [x] Stop devchat sub process when user closing vscode.
• [x] Stop devchat sub process when user closing IntelliJ.