jxtn.jfx.swt/src/javafx/embed/swt/FXCanvas2.java: fix IME candidate window position
jxtn.jfx.swt/src/javafx/embed/swt/FXCanvas2.java: fix IME candidate window position

SkyLandTW/JXTN,AqD/JXTN,SkyLandTW/JXTN