Cancel debug from test explorer

[eleanorjboyd]

1. create a folder, open vscode
2. create a python test file like test_ex.py
3. add a test inside like so

def test_random():
    assert True;

4. create a venv

5. install pytest (python -m pip install pytest)

6. click on the test explorer tab

7. select pytest and root dir (".")

8. add a breakpoint to your test

9. from the test explorer click debug next to the test (so run with debug)

10. wait for the breakpoint to be hit, it should now pop up with the debug menu
    

11. go back to the text explorer tab, use the "cancel" button here

12. 🐛 this button does not cancel the debug session (see the square button below)
    

To verify:
follow all the steps above but when you click the cancel button in the test explorer verify that the debug session is canceled.