Improve tessellator performance by delaying calls ofisIntersectingPolygon

[iverase]

Description

This method iterates over all the remaining edges of a polygons to check if a given edge intersects any of them .Currently the method is called when curing local intersections or splitting the polygon which is iterating over the polygon edges so it is potentially a O(n^2) on the edges of the polygon.

The calls are performed on a big conditional but currently the calls are not done in the last position. So just moving the call to the last position brings a very nice performance improvement. For example for the polygons shared on #11777:

FE-24544446.txt:
without change: 542.682 seconds
with change: 229.524 seconds

ORG-24132378.txt:
without change: too long, I did not have patience to let it finish.
with change: 1416.57 seconds

[iverase]

closed in #11786