Call setHiddenUntilMouseMoves when text box is edited

On macOS, when a textbox is edited, the mouse cursor is hidden. The mouse cursor is shown again when the mouse moves. This occurs no matter where the mouse is located. I've attached a gif that demonstrates this behaviour using a native mac app (iTerm2).

Qt apps don't have this behaviour. All that would be required to implement this is to insert calls to setHiddenUntilMouseMoves in various places.

I've attached an example program that demonstrates how to implement the correct behaviour.