TextField: Fix binding loop for property font
TextField: Fix binding loop for property font

Change-Id: I752595495a3cb1347eb5f43dcf8ff36044a02e02
Reviewed-by: Jens Bache-Wiig <9cea9d70b08f8210134ec5959114f72bad51ed1d@digia.com>

kobolabs/qtquickcontrols,drgvond/qtquickcontrols,kobolabs/qtquickcontrols,drgvond/qtquickcontrols,kobolabs/qtquickcontrols,drgvond/qtquickcontrols,mizukusak/qtquickcontrols,mizukusak/qtquickcontrols,mizukusak/qtquickcontrols