fix add listenerName for geo-replicator (#10779)

### Motivation

fix mistake when resolve the conflicts in #10751

(cherry picked from commit 47b3495)

pulsar-client-tools/src/main/java/org/apache/pulsar/admin/cli/CmdClusters.java

@@ -311,7 +311,7 @@ abstract class ClusterDetailsCommand extends BaseCommand {
         protected String brokerClientTrustCertsFilePath;
 
         @Parameter(names = "--listener-name", description = "listenerName when client would like to connect to cluster", required = false)
-        private String listenerName;
+        protected String listenerName;
 
         @Parameter(names = "--cluster-config-file", description = "The path to a YAML config file specifying the "
                 + "cluster's configuration")