CupertinoProgressBarDialog constructor
      const
      CupertinoProgressBarDialog({})
     
    
Creates a Cupertino-style progress indicator dialog.
The insetAnimationDuration parameter controls how long the animation of dialog
position takes when keyboard appears/disappears. Defaults to 100ms.
The insetAnimationCurve parameter defines the animation curve used for
the dialog position animation. Defaults to Curves.decelerate.
Implementation
const CupertinoProgressBarDialog({
  super.key,
  this.insetAnimationDuration = const Duration(milliseconds: 100),
  this.insetAnimationCurve = Curves.decelerate,
});