Add a "Return to digital content" button next to the "Open in a new window" when opening a Realize Reader book (or returning back to that screen after looking at a book)

Add a "Return to digital content" button next to the "Open in a new window" when opening a Realize Reader book (or returning back to that screen after looking at a book). Teachers go back to that page, miss the exit button, and end up opening the book up again or closing out the tab, which makes them have to log back in.