ZF-6824: if the user is not using a route paramater named action active pages dont register correctly.
If you define a route with a module + controller, zend_navigation_page_mvc cant recognize it as active. For instance if you create a route with module Foo and controller Bar, and then create a page with that module + controller it won't register in active breadcrumbs. If I do specify the default action parameter of index then it does work correctly. Trivial but a user may not be using a route param called action