Book: Chapter 7: Code example for setting switch state doesn't produce same output

[BrickSigma]

Bug description
Chapter 7: Settings
In the code sample for loading and saving states in gschema settings for a switch button, the sample sets the state property for the switch using is_switch_enabled setting from the schema, however this will only change the switch background accent color but not it's position, as shown bellow:

I believe the example should instead set the active property rather than the state one, so that the switch color and position is correct and matches the GIF of the example shown in the book.