Add Custom Buttons to Navigation bar

Presently custom buttons are bound to the div.apt-guide-content-wrapper, aka the engagement content body. Users want to be able to add custom buttons to the div.px-step-navigation so they appear inline with guide navigation like next, skip, back, etc.

We can use CSS to position custom buttons as if they are in the navigation bar, but this approach is not reliable across end user experiences. The current advice is to hide the navigation bar and recreate all of the guide navigation using custom buttons alone. This is cumbersome, and leaves significant gaps.

Custom is requesting to actually be able to add Custom Buttons to Navigation bar