Check on debug launch configuration's `python` field prevents container debugging

The Docker extension resolves a Python debug configuration in order to support Python debugging. Included in that resolved debug configuration is the python field, with a value of just python3. This is because this is the command to use for launching Python in the container. However, validation of that field is done against the host, so if the host and container don't both have python3, debugging fails. We've tried changing it to python, which worked on Windows, but failed on Mac and Linux.

Is there a way to override this check to stop it from validating against the host when it should not be?

An additional strange thing we've noticed is that the error seems to only show up on Insiders. The code doesn't seem to be Insiders only so it's confusing why it would be doing this.