Catch and display load errors for WorkloadsOverview (#4393)

src/renderer/components/kube-object-list-layout/kube-object-list-layout.tsx

@@ -67,7 +67,7 @@ export class KubeObjectListLayout<K extends KubeObject> extends React.Component<
     const { store, dependentStores = [], subscribeStores } = this.props;
     const stores = Array.from(new Set([store, ...dependentStores]));
     const reactions: Disposer[] = [
-      reaction(() => clusterContext.contextNamespaces.length, () => {
+      reaction(() => clusterContext.contextNamespaces.slice(), () => {
         // clear load errors
         this.loadErrors.length = 0;
       }),