Disable appdomain usage by default

## Description

Currently, we consider no information as "use AppDomain" by default. This is allowing to have good separation of concerns by default but as a performance cost.

We want to change the default to be "no AppDomain" except when explicitly asked for.


[AB#1711730](https://devdiv.visualstudio.com/0bdbc590-a062-4c3f-b0f6-9383f67865ee/_workitems/edit/1711730)