Sketcher: Trim bug
Sketcher: Trim bug

==================

Trim tool fails to generate coincidence upon trimming an arc of ellipse at the end of the arc.

https://forum.freecadweb.org/viewtopic.php?f=3&t=31594&start=50#p266765

Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master