Revert the change of removing index path (#438)

skyvern-frontend/src/router.tsx

@@ -34,6 +34,10 @@ const router = createBrowserRouter([
             path: ":taskId",
             element: <TaskDetails />,
             children: [
+              {
+                index: true,
+                element: <Navigate to="actions" />,
+              },
               {
                 path: "actions",
                 element: <TaskActions />,