[UXP-205] restore sorting

Author: FrancescoMolinaro

src/app/shared/explore/section-component/grid-section/grid-section.component.ts

@@ -81,7 +81,7 @@ export class GridSectionComponent implements OnInit {
     this.paginatedSearchOptions = new PaginatedSearchOptions({
       configuration: this.gridSection.discoveryConfigurationName,
       pagination: pagination,
-      //sort: new SortOptions('dc.title', SortDirection.ASC)
+      sort: new SortOptions('dc.title', SortDirection.ASC)
     });
 
     this.getMainBoxResults();