[Testing] JavaScript-triggered clicks not working on buttons within component templates

I've added a `button` element with an action `changeName` in the template for the `pretty-color` component. Clicking this button should change the component to blue. This works fine outside of the testing environment, but for some reason I can't trigger the button click programmatically as I would expect to be able to.

The "button changes color" test fails, and I'm unsure why.

I apologize if Ember App Kit isn't the most appropriate place for this issue, but I wanted to bring it to your attention in case it is an issue with EAK's testing setup. It would also be nice to have a proper example of this for others who want to get started with testing their components.