In-vessel build CAD generation issue when toroidal_angles exceeds 180 degrees

[connoramoreno]

In-vessel component CAD generation can be erroneous when the toroidal extent of the build exceeds 180 degrees. While this has historically been solved by using the repeat parameter, @tokamaster pointed out that this workflow cannot work for single-period stellarators. It would be useful to modify the CAD generation routine to successfully build 360-degree geometries without using the repeat parameter.