Fix KubernetesProvider configuration - add required restEndpoint

- Add initialConfig with restEndpoint: 'http://localhost:8001' to KubernetesProvider
- Matches default endpoint used in kubernetes-client.ts for consistency
- Resolves 'useKubernetes must be used within a KubernetesProvider' error

Co-Authored-By: Dan Lynch <[email protected]>

Author: devin-ai-integration[bot]

ui/app/providers.tsx

@@ -9,7 +9,11 @@ interface ProvidersProps {
 
 export function Providers({ children }: ProvidersProps) {
   return (
-    <KubernetesProvider>
+    <KubernetesProvider 
+      initialConfig={{
+        restEndpoint: 'http://localhost:8001'
+      }}
+    >
       <NamespaceProvider>
         {children}
       </NamespaceProvider>