Debug console always comes up when attaching to target

[joaomoreno]

Testing #3238

When attaching to a process, we surely get no debug output at all from it. Yet, the debug console still always pops up. It's very distracting.

Especially when using the restart: true option:

ping @weinand

[weinand]

@isidorn a session restart should not open the debug console

[joaomoreno]

Console still comes up on debug start, but no more on restart.

[weinand]

@isidorn we could consider to not reveal the debug console on 'attach' (but then your code would have to know the semantics of 'attach'...)