[FIX] getCoordsWithinElement in navcubeplugin not working with page scroll.

[siem4]

Recently(last month) the scrolling of page offset and getting coords within the viewer was changed but this was forgotten in the navcubeplugin. Therefore the navcube did not change and therefore does not respond well to scrolling and selecting within the navcube. Would it be possible to change to as per the other changes:

        function getCoordsWithinElement(event) {
            var coords = [0, 0];
            if (!event) {
                event = window.event;
                coords[0] = event.x;
                coords[1] = event.y;
            } else {
                var element = event.target;
                const rect = element.getBoundingClientRect();

                coords[0] = event.clientX - rect.left;
                coords[1] = event.clientY - rect.top;
            }
            return coords;
        }