Geometry_Engine: BooleanUnion(List<Line>, double, bool) bug in case of multiple overlapping curves

[pawelbaran]

Description:

In one of real life scenarios I encountered a bug in BooleanUnion(List<Line>, double, bool) method with bool input set to true - it is related to multiple curves starting and ending at almost same points, which makes IncludeIntermediatePointsRanges crash.

Looks like I know how to fix it, so will add it to #3283.

Test file(s):

On SharePoint.