Replace Jest matcher toHaveProperty with Jasmine's toBeUndefined

Co-authored-by: renemadsen <76994+renemadsen@users.noreply.github.com>

Author: Copilot

eform-client/src/app/plugins/modules/time-planning-pn/components/plannings/time-planning-actions/download-excel/download-excel-dialog.component.spec.ts

@@ -141,7 +141,7 @@ describe('DownloadExcelDialogComponent', () => {
       component.onDownloadExcelReportAllWorkers();
 
       const callArgs = mockWorkingHoursService.downloadReportAllWorkers.calls.mostRecent().args[0];
-      expect(callArgs).not.toHaveProperty('siteId');
+      expect(callArgs.siteId).toBeUndefined();
     });
   });
 });