Use productName from package.json (#2580)

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

src/renderer/ipc/invalid-kubeconfig-handler.tsx

@@ -4,6 +4,7 @@ import { ClusterStore } from "../../common/cluster-store";
 import { InvalidKubeConfigArgs, InvalidKubeconfigChannel } from "../../common/ipc/invalid-kubeconfig";
 import { Notifications, notificationsStore } from "../components/notifications";
 import { Button } from "../components/button";
+import { productName } from "../../common/vars";
 
 export const invalidKubeconfigHandler = {
   source: ipcRenderer,
@@ -24,7 +25,7 @@ function InvalidKubeconfigListener(event: IpcRendererEvent, ...[clusterId]: Inva
       <div className="flex column gaps">
         <b>Cluster with Invalid Kubeconfig Detected!</b>
         <p>Cluster <b>{cluster.name}</b> has invalid kubeconfig {contextName} and cannot be displayed.
-        Please fix the <a href="#" onClick={(e) => { e.preventDefault(); shell.showItemInFolder(cluster.kubeConfigPath); }}>kubeconfig</a> manually and restart Lens
+        Please fix the <a href="#" onClick={(e) => { e.preventDefault(); shell.showItemInFolder(cluster.kubeConfigPath); }}>kubeconfig</a> manually and restart {productName}
         or remove the cluster.</p>
         <p>Do you want to remove the cluster now?</p>
         <div className="flex gaps row align-left box grow">