Quick measurement with Alt is incorrectly showing viewport coordinates instead of document coordinates

[Keavon]

Draw two separated rectangles. With the Select tool active and one of them selected, hold Alt and hover over the other one. You will see a numerical distance show their separation between one another. Zoom in and measure again. You'll now see how the two are showing a different value, proportional to the viewport's new zoom level increase. This needs to be shown in document space, not viewport space, to be a useful feature.

[vineetpuranik]

Fixed with #2995