feat(default-entity-repository): use new filter extension

Author: jaredcnance

src/JsonApiDotNetCore/Data/DefaultEntityRepository.cs

@@ -56,10 +56,10 @@ public virtual IQueryable<TEntity> Filter(IQueryable<TEntity> entities,  FilterQ
             if(filterQuery == null)
                 return entities;
 
-            var attributeFilterQuery = new AttrFilterQuery(_jsonApiContext, filterQuery);
-            
-            return entities
-                .Filter(attributeFilterQuery);
+            if(filterQuery.IsAttributeOfRelationship)
+                return entities.Filter(new RelatedAttrFilterQuery(_jsonApiContext, filterQuery));
+            else
+                return entities.Filter(new AttrFilterQuery(_jsonApiContext, filterQuery));
         }
 
         public virtual IQueryable<TEntity> Sort(IQueryable<TEntity> entities, List<SortQuery> sortQueries)