This doesn't do a good job maintaining state across morphs, but hey
it's Working At All in terms of wiring, and that's good!!
Also need to style up the toggle as a cute button instead of a visible
checkbox and the words "Play/pause"!
Add some unobtrusive white background for contrast, show it when the
Turbo frame is loading too, add a spinner cursor, and fix a silliness
of how we put the `position: absolute` stuff into the component-y part
of the hanger spinner instead of this specific use case lol oops!
