fix: match registerPluginSettings name to deployed plugin + fix badge nav URL

The settings component never rendered in E2E because registerPluginSettings
used 'headlamp-polaris' (and before that 'headlamp-polaris-plugin'), but
the deployed plugin directory is static-plugins/polaris — Headlamp identifies
it as 'polaris'. Changed to 'polaris' so the settings page can match the
registration to the correct plugin.

The badge click navigated to /polaris instead of /c/main/polaris because
Router.createRouteURL did not reliably resolve the cluster prefix from the
plugin context. Replaced with direct URL construction using K8s.useCluster().

Co-Authored-By: Paperclip <noreply@paperclip.ing>

src/components/AppBarScoreBadge.tsx

@@ -1,4 +1,4 @@
-import { K8s, Router } from '@kinvolk/headlamp-plugin/lib';
+import { K8s } from '@kinvolk/headlamp-plugin/lib';
 import { useTheme } from '@mui/material/styles';
 import React from 'react';
 import { useHistory } from 'react-router-dom';
@@ -36,7 +36,8 @@ export default function AppBarScoreBadge() {
   };
 
   const handleClick = () => {
-    history.push(Router.createRouteURL('polaris', { cluster: cluster ?? '' }));
+    const prefix = cluster ? `/c/${cluster}` : '';
+    history.push(`${prefix}/polaris`);
   };
 
   return (

src/index.tsx

@@ -99,7 +99,7 @@ registerRoute({
 });
 
 // Register plugin settings
-registerPluginSettings('headlamp-polaris', PolarisSettings, true);
+registerPluginSettings('polaris', PolarisSettings, true);
 
 // Register details view section for supported controller types
 registerDetailsViewSection(({ resource }) => {