This setting will not be automatically translated to support_wall_thickness if it's overwritten, because that would require knowing the line width and we don't know that here. So it's hard to do.
Contributes to issue CURA-7077.
This way it's:
- documented at the top of the file to make it easier to find all the changes, and
- easier to extend the list of merged settings.
Contributes to issue CURA-7077.
