is_intersection_segment_segment_xy inconsistency for fringe case

```
(a, b) = [[0, 0, 0], [1, 0, 0]]
(c, d) = [[1,-1, 0], [1, 1, 0]]

from compas.geometry import is_intersection_segment_segment_xy

is_intersection_segment_segment_xy((a, b), (c, d))
# prints True

is_intersection_segment_segment_xy((a, b), (d, c))
# prints False

```
cause:
is_ccw_xy(a, c, d) != is_ccw_xy(b, c, d)