feat: add error log for failed update

Refs #366

src/app/services/service-worker-update.service.ts

@@ -61,7 +61,7 @@ export class ServiceWorkerUpdateService {
                     break;
 
                 case 'VERSION_INSTALLATION_FAILED':
-                    console.log("ServiceWorkerUpdateService: VERSION_INSTALLATION_FAILED");
+                    console.log(`Failed to install app version '${evt.version.hash}': ${evt.error}`);
                     this.notificationService.notify(this.i18nService.localizeText("ERROR_SERVICE_WORKER_INSTALL_FAILED"), 10000);
                     break;
             }