message: frontend: Show different message for CLUO section for sandbox
diff: @@ -180,13 +180,13 @@ export class ContainerLinuxUpdateDetails extends SafetyFirst {
  </div>
  { !this.state.expanded &&
  <div className="co-cluster-updates__heading--updates">
  - <div className="co-cluster-updates__heading--updates">N&#47;A</div>
  + <div className="co-cluster-updates__heading--updates">Not available in Tectonic Sandbox</div>
  </div>
  }
  <a className="co-cluster-updates__toggle" onClick={this._toggleExpand}>{this.state.expanded ? 'Collapse' : 'Expand'}</a>
  </div>
  { this.state.expanded && <div>
  - <Status status="N/A"/>
  + <Status status="Not available in Tectonic Sandbox"/>
  </div> }
  </div> }
  { isOperatorInstalled && <div className="co-cluster-updates__component">
  