Trying to hit the [execute API](https://www.elastic.co/guide/en/elasticsearch/painless/8.5/painless-execute-api.html) with an index that in available via cross cluster search will fail with an `IllegalArgumentException`: `Cross-cluster calls are not supported in this context but remote indices were requested`

That is because `PainlessExecuteAction`'s [`TransportAction`](https://github.com/elastic/elasticsearch/blob/8.5/modules/lang-painless/src/main/java/org/elasticsearch/painless/action/PainlessExecuteAction.java#L462) is a [`TransportSingleShardAction`](https://github.com/elastic/elasticsearch/blob/8.5/server/src/main/java/org/elasticsearch/action/support/single/shard/TransportSingleShardAction.java#L153) which uses [`IndexNameExpressionResolver.concreteIndices`](https://github.com/elastic/elasticsearch/blob/8.5/server/src/main/java/org/elasticsearch/cluster/metadata/IndexNameExpressionResolver.java#L331), which does not support remote clusters.

What would it take it enable PainlessExecuteAction to support CCS?

Kibana uses the execute api to validate runtime fields on edit, see https://github.com/elastic/kibana/issues/145861
modules/lang-painless/src/main/java/org/elasticsearch/painless/action/PainlessExecuteAction.java
if (o == null || getClass() != o.getClass()) return false;
            Response response = (Response) o;
            return Objects.equals(result, response.result);
        }
        @Override
        public int hashCode() {
            return Objects.hash(result);
        }
    }
    public static class TransportAction extends TransportSingleShardAction<Request, Response> {
        private final ScriptService scriptService;
        private final IndicesService indicesServices;
        @Inject
        public TransportAction(
            ThreadPool threadPool,
            TransportService transportService,
            ActionFilters actionFilters,
            IndexNameExpressionResolver indexNameExpressionResolver,
            ScriptService scriptService,
            ClusterService clusterService,
            IndicesService indicesServices
        ) {
            super(
                NAME,
                threadPool,
                clusterService,
                transportService,
                actionFilters,
                indexNameExpressionResolver,