message: frontend: Adds check for lastCheckedDate
diff: @@ -73,12 +73,12 @@ const NodeCLUpdateStatus = ({node}) => {
  const lastCheckedDate = containerLinuxUpdateOperator.getLastCheckedTime(node);
  return <div>
  - <span><i className={updateStatus.className}></i>&nbsp;&nbsp;{updateStatus.text}</span>
  + {updateStatus ? <span>{updateStatus.className && <span><i className={updateStatus.className}></i>&nbsp;&nbsp;</span>}{updateStatus.text}</span> : null}
  {!_.isEmpty(newVersion) && !containerLinuxUpdateOperator.isSoftwareUpToDate(node) &&
  <div>
  <small className="">Container Linux {containerLinuxUpdateOperator.getVersion(node)} &#10141; {newVersion}</small>
  </div>}
  - {!_.isEmpty(lastCheckedDate) && containerLinuxUpdateOperator.isSoftwareUpToDate(node) &&
  + {lastCheckedDate && containerLinuxUpdateOperator.isSoftwareUpToDate(node) &&
  <div>
  <small className="">Last checked on <div className="co-inline-block">{<Timestamp timestamp={lastCheckedDate} isUnix={true} />}</div></small>
  </div>}
  