Fix search bar navigation.

frontend/src/app/pages/search-publications/search-publications.component.ts

@@ -27,6 +27,10 @@ export class SearchPublicationsComponent implements OnInit, OnDestroy {
                 if (categoryId) {
                     this.searchPublicationsService.loadPublications(`category_id=${categoryId}`);
                 }
+                const query = params.get('query')
+                if (query) {
+                    this.searchPublicationsService.loadPublications(query);
+                }
             });
     }