MDEV-29775 addendum: enable wsrep for wsrep_replicate_myisam_basic test

mysql-test/suite/sys_vars/t/wsrep_replicate_myisam_basic.cnf

+# Use default setting for mysqld processes
+!include include/default_mysqld.cnf
+
+[mysqld.1]
+wsrep-on=1
+#galera_port=@OPT.port
+#ist_port=@OPT.port
+#sst_port=@OPT.port
+wsrep_provider_options='base_port=@mysqld.1.#galera_port;gcache.size=10M'
+wsrep-cluster-address=gcomm://
+wsrep-provider=@ENV.WSREP_PROVIDER
+binlog-format=ROW