Dashboard: hide kubeconfig buttons

They generate kubeconfig files that have no port, which does not work as we
require port forwarding to reach the server.  To avoid confusing users,
hide the buttons.

pkg/rancher-desktop/preload/dashboard.ts

@@ -53,6 +53,13 @@ export default async function initDashboard(): Promise<void> {
         display: none;
       }
     `);
+    // Hide the download kubeconfig button; the config has the wrong port.
+    stylesheet.insertRule(`
+      .header-buttons button[data-testid="btn-download-kubeconfig"],
+      .header-buttons button[data-testid="btn-copy-kubeconfig"]{
+        display: none;
+      }
+    `);
     document.adoptedStyleSheets.push(stylesheet);
   });
 }