Fixed flickering livewire contour in rotated slices. Reason was that the slice
geometry was not treated as an image geometry e.g. during a check whether a certain
point lies inside the image.
Fixed that by shifting the origin manually but not using the ChangeImageGeometryConsideringOriginOffset
method which also changes the image geometry flag.
Merge branch 'bug-18350-fix-livewire-for-oblique-planes'