Improper use of setState

[BE-Webdesign]

I think I accidentally added this one in 🙃 :

In editor/inserter/index.js toggle() is currently:

toggle() {
	this.setState( {
		opened: ! this.state.opened,
	} );
}

It should instead be:

toggle() {
	this.setState( ( previousState ) => ( {
		opened: ! previousState.opened,
	} ) );
}