Viewset breadcrumbs missing suffix

[NathanUrwin]

If I have a UserViewSet that subclasses the ModelViewSet, the breadcrumb for a User Instance (Detail) page is Api Root > User > User instead of the expected Api Root > User List > User Instance. I'm not sure if this is expected behavior, but I would argue against it if so. Thanks in advance for your time.

[pevzi]

git bisect revealed that this was introduced in #3273.

[lovelydinosaur]

Thanks @pevzi.

[mmedal]

#3273 removes the view.suffix that gets passed along to api_settings.VIEW_NAME_FUNCTION in favor of always calling cls().get_view_name. As such, the way APIView.get_view_name is implemented makes this a little tricky. #4750 fixes this issue with minimal impact.