Numerical instability with QLineF::intersect and QLineF::BoundedIntersection

When trying to intersect (almost) parallel lines, QLineF::intersect may return the intersection type incorrectly as QLineF::BoundedIntersection when it is actually QLineF::UnboundedIntersection (or QLineF::NoIntersection)

Since the values in the debugger are converted from double and are not the same as in memory, I dumped the memory values and attached the images. I also created a test code that demonstrates the issue.