Simplification of Logic in `MusicProgress.qml`

property int progressBarWidth: {
  if (root.labelOnTop) {
    return root.width - Style.hspan(6/45);
  } else {
    return root.width - Style.hspan(5);
 }
}

property int progressBarWidth: root.width - Style.hspan(root.labelOnTop?6/45:5)