Allow customizing the Responsive extension click handler

DanSwitzer2

I'd like to see a callback/event triggered when the responsive extension click handler runs.

I have a situation where a link inside the first column (which is where the expand icon is rendered) and I would like to change the behavior so clicking on the anchor does not trigger the expansion.

I'd like to be able to cancel the default click handler if the target is an anchor.

By providing a callback/event handler that's triggered we could cancel the event.