Allow exclusion of components from dialog closing

[iurage]

We're currently using a main dialog for showing of content, and a secondary dialog for showing temporary information (like Notifications). We want to be able to close each of these dialogs without closing the other.

However if both dialogs are open, and we click on the secondary dialog to close, the current implementation recognizes it as a "click outside" for the main dialog, resulting in both being closed.

We would like some way to listen to the click outside handler to provide exclusion cases, or be able to exclude another element from "click outside"