message: Block node detail graphs when the node has no sidecar
diff: @@ -43,6 +43,7 @@ import { NamespaceActions } from '../../actions/NamespaceAction';
  import { DurationInSeconds, PollIntervalInMs } from '../../types/Common';
  import { DagreGraph } from './graphs/DagreGraph';
  import GraphThunkActions from '../../actions/GraphThunkActions';
  +import * as MessageCenterUtils from '../../utils/MessageCenter';
  type ReduxProps = {
  activeNamespaces: Namespace[];
  @@ -455,6 +456,12 @@ export class CytoscapeGraph extends React.Component<CytoscapeGraphProps, Cytosca
  if (target.data('isInaccessible')) {
  return;
  }
  + if (target.data('hasMissingSC')) {
  + MessageCenterUtils.add(
  + `A node with a missing sidecar provides no node-specific telemetry and can not provide a node detail graph.`
  + );
  + return;
  + }
  if (target.data('isOutside')) {
  this.props.setActiveNamespaces([{ name: target.data('namespace') }]);
  return;
  