message: Fix Cancel+Cancel action
diff: @@ -128,7 +128,6 @@ class IstioConfigDetailsPage extends React.Component<RouteComponentProps<IstioCo
  onCancel = () => {
  if (this.hasOverview()) {
  this.props.history.push(this.props.location.pathname + '?list=overview');
  - this.fetchIstioObjectDetails();
  } else {
  this.backToList();
  }
  @@ -184,10 +183,6 @@ class IstioConfigDetailsPage extends React.Component<RouteComponentProps<IstioCo
  };
  onEditorChange = (value: string) => {
  - // This is a workaround to prevent that first CTRL+Z invocation clears the editor.
  - if (!this.state.isModified && value === '') {
  - value = this.fetchYaml();
  - }
  this.setState({
  isModified: true,
  yamlModified: value,
  