because we always have we a refedit, but sometimes not a refbutton, so set the
label widget to use for the dialog shrink mode on the refedit instead of the
refbutton. This way we get the shrunken dialog title bar updated with the label
contents regardless of using the shrink button or clicking in the editbox and
dragging the mouse around the spreadsheet triggering the shrink mode

Change-Id: Ifdff01a30d5c65aa964d4bf544017a2927757d67