debug config that uses `${command:pickArgs}` does not cancel when pressing escape on the arguments prompt

[DetachHead]

to reproduce

1. create the following .vscode/launch.json:

   {
       "version": "0.2.0",
       "configurations": [
           {
               "name":"Python Debugger: Current File with Arguments",
               "type":"debugpy",
               "request":"launch",
               "program":"${file}",
               "console":"integratedTerminal",
               "args":"${command:pickArgs}"
           },
       ]
   }

2. open a python file and set a breakpoint
3. run the launch config
4. press Escape when this dialog appears (note that it says "'Escape' to cancel")):
   

expected behavior

it cancels and does not run

actual behavior

it runs and pauses on the breakpoint:

environment

vscode v1.101.24242
ms-python.python v2025.8.1
ms-python.debugpy v2025.8.0
OS: windows 10, 11

[eleanorjboyd]

thank you! will investigate