allow extensions devtools to use the sidebar

public/app/core/components/AppChrome/ExtensionSidebar/ExtensionSidebarProvider.tsx

@@ -18,6 +18,7 @@ const PERMITTED_EXTENSION_SIDEBAR_PLUGINS = [
   // Support both until that migration is complete.
   'grafana-grafanadocsplugin-app',
   'grafana-pathfinder-app',
+  'grafana-extensionsdevtools-app',
 ];
 
 export type ExtensionSidebarContextType = {

public/app/core/components/AppChrome/ExtensionSidebar/ExtensionToolbarItemButton.tsx

@@ -19,6 +19,8 @@ function getPluginIcon(pluginId?: string): string {
       return 'book';
     case 'grafana-investigations-app':
       return 'eye';
+    case 'grafana-extensionsdevtools-app':
+      return 'plug';
     default:
       return 'ai-sparkle';
   }