ResourceGraphBuilder prioritises DbSet name over type name

[maurei]

In the following example

        public class TestContext : DbContext
        {
            public DbSet<MyResource> SomeDifferentDbSetName { get; set; }
        }

MyResource should be exposed as my-resources, not as some-different-db-set-names. This is more consistent because central to JADNC pipelines are models, not DbSets.