fix: handle empty payloads in scheduled task runs to prevent crash

Author: anand-242003

apps/webapp/app/presenters/v3/TestTaskPresenter.server.ts

@@ -382,6 +382,10 @@ export class TestTaskPresenter {
 
 async function getScheduleTaskRunPayload(payload: string, payloadType: string) {
   const packet = await parsePacket({ data: payload, dataType: payloadType });
+  if (!packet) {
+    return { success: false }; //  handle packet undefined
+  }
+
   if (!packet.timezone) {
     packet.timezone = "UTC";
   }