TSAC-3549

Sandwich and double wall: Creating insulation at the corners has been improved in situations when the corner parts are smaller than the insulation itself.

• On the Vertical section tab, there is a new option for creating a gap between the inside and the front of the inner shell at the bottom and the top. The gap is filled with insulation.
• On the Horizontal section tab, the empty void created between the front of the created corner part and the front of the insulation is now by default filled with insulation.