Receive “menu-toogle” event from section menu in customizer

So far the only solution I’ve come up with is creating a function that postMessages
the event into the iframe (using customize_controls_enqueue_scripts hook).

As for the receiver in iframe (hooked on customize_preview_init hook) I think it could still need some optimization because I’m getting a weird issue with window.addEventListener('message',* getting some duplicate on customizer loading..

But probably it’s the way it’s supposed to work since i’m using the customize_preview_init hook twice.

Since I feel their might be better ways any feedback or comment is welcome_