Return true if the keyboard focus should be relinquished for a pointer that starts at the
The default (with no KeyboardFocusController specified) is to relinquish focus for any point
that does not start on a native text field. With this method, fine control is possible,
allowing some in-game UI to be interacted with without losing focus if desired.
Called each time a field has the return key pressed. Return true to relinquish the