Prioritize displaying as enum if a type is known
to be an enum. Otherwise this would just end up
get displayed as string representation of its value.
Enable respective dumper tests.
Change-Id: I3e5406e14a68f02741b6144bb54528b72cc8192d
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: hjk <hjk@qt.io>