feat(YaruWindowControl)!: use material state properties for colors

[Jupi007]

This PR fix the property name, and add more flexibility in the way you can customize the colors:

YaruWindowControl(
  ...
  backgroundColor:
      MaterialStateProperty.resolveWith((states) {
    if (states.contains(MaterialState.pressed)) {
      return Colors.green;
    }
    if (states.contains(MaterialState.hovered)) {
      return Colors.blue;
    }
    if (states.contains(MaterialState.disabled)) {
      return Colors.yellow;
    }
    return null;
  }),
),

[Jupi007]

It should be reacting in the same way as previously if you use MaterialStatePropertyAll.