Use pointer-events: none" to prevent mouse events in the image guides and tip. Remove all the code that those unneeded mouse events.
Stop listening to mouse events for image scale sticker and clean up all unneeded code.
Don't show the image tip outside of the valid range of the x coordinates.
Check for all boundaries of the image.
Fix two new issues discovered in code review.
Don't use crosshair cursor for images with narrow width or height.
Merge pull request #7298 from adobe/rlim/precise-img-tip

Use "pointer-events: none" to prevent from getting mouse events in the image guides and tip.