[DSC-2860] fix potentially empty stream

Author: Andrea Barbasso

src/app/shared/object-list/search-result-list-element/item-search-result/item-types/item/item-search-result-list-element.component.ts

@@ -114,7 +114,7 @@ export class ItemSearchResultListElementComponent extends SearchResultListElemen
    * Check if item has Third-party metrics blocked by consents
    */
   ngAfterViewInit() {
-    if (this.showMetrics && this.klaroService && this.klaroService.watchConsentUpdates instanceof Function) {
+    if (this.showMetrics && this.klaroService && this.klaroService.watchConsentUpdates instanceof Function && isNotEmpty(this.dso?.metrics)) {
       this.klaroService.watchConsentUpdates();
 
       this.hasLoadedThirdPartyMetrics$ = combineLatest([