fix(hexojs): Fix RPC expect unwrapping in dashboard load function

The listInstances and listBackups RPC declarations use expect which
unwraps the response array directly. Changed results[0].instances to
results[0] and results[3].backups to results[3].

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

package/secubox/luci-app-hexojs/htdocs/luci-static/resources/view/hexojs/overview.js

@@ -20,10 +20,10 @@ return view.extend({
 			api.listBackups()
 		]).then(function(results) {
 			return {
-				instances: results[0].instances || [],
+				instances: results[0] || [],
 				status: results[1],
 				stats: results[2],
-				backups: results[3].backups || []
+				backups: results[3] || []
 			};
 		});
 	},