MDEV-24545 Sequence created by one connection remains invisible to another

row_merge_is_index_usable(): Allow access to any SEQUENCE, even if it was
created after the read view. SQL sequences are no-rollback tables with no
history at all.

mysql-test/suite/sql_sequence/concurrent_create.test

@@ -56,3 +56,22 @@ FLUSH TABLES;
 --connection default
 
 DROP TABLE s1,s2;
+
+#
+# MDEV-24545 Sequence created by one connection remains invisible to another
+#
+CREATE TABLE t1 (a INT) ENGINE=InnoDB;
+START TRANSACTION WITH CONSISTENT SNAPSHOT;
+
+--connect (con1,localhost,root,,test)
+CREATE SEQUENCE s1 ENGINE=InnoDB;
+FLUSH TABLES;
+--disconnect con1
+
+--connection default
+SELECT NEXTVAL(s1);
+COMMIT;
+
+# Cleanup
+DROP TABLE t1;
+DROP SEQUENCE s1;