MDEV-24464: Added wait condition to make sure table t1 is replicated to node_2.

mysql-test/suite/galera/t/galera_toi_ddl_sequential.test

@@ -9,6 +9,9 @@ CREATE TABLE t1 (f1 INTEGER PRIMARY KEY) ENGINE=InnoDB;
 INSERT INTO t1 VALUES (1);
 
 --connection node_2
+--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES WHERE NAME LIKE 'test/t1';
+--source include/wait_condition.inc
+
 ALTER TABLE t1 ADD COLUMN f2 INTEGER;
 INSERT INTO t1 VALUES (2, 3);