MDEV-24500: Added wait condition to make sure table t1 is replicated to node_2.

mysql-test/suite/galera_sr/t/GCF-900.test

@@ -15,6 +15,9 @@ START TRANSACTION;
 INSERT INTO t1 VALUES (2, 0);
 
 --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 DROP COLUMN f2;
 
 --connection node_1