Correction bulk provision without telemetry

ui-ngx/src/app/core/http/entity.service.ts

@@ -937,6 +937,7 @@ export class EntityService {
       );
       observables.push(observable);
     }
+    if (observables.length) {
       return forkJoin(observables).pipe(
         map((response) => {
           const hasError = response.filter((status) => status === 'error').length > 0;
@@ -947,6 +948,9 @@ export class EntityService {
           }
         })
       );
+    } else {
+      return of(null);
+    }
   }
 
   private getStateEntityInfo(filter: EntityAliasFilter, stateParams: StateParams): {entityId: EntityId} {