Fix component name for ClusterState custom (opensearch-project#14477) (…

…opensearch-project#14485)

(cherry picked from commit 3a516cf)

Signed-off-by: Shivansh Arora <hishiv@amazon.com>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Signed-off-by: kkewwei <kkewwei@163.com>

server/src/main/java/org/opensearch/gateway/remote/RemoteClusterStateService.java

@@ -1160,7 +1160,8 @@ private ClusterState readClusterStateInParallel(
         for (Map.Entry<String, UploadedMetadataAttribute> entry : clusterStateCustomToRead.entrySet()) {
             asyncMetadataReadActions.add(
                 remoteClusterStateAttributesManager.getAsyncMetadataReadAction(
-                    CLUSTER_STATE_CUSTOM,
+                    // pass component name as cluster-state-custom--<custom_name>, so that we can interpret it later
+                    String.join(CUSTOM_DELIMITER, CLUSTER_STATE_CUSTOM, entry.getKey()),
                     new RemoteClusterStateCustoms(
                         entry.getValue().getUploadedFilename(),
                         entry.getValue().getAttributeName(),