In CREATE SEQUENCE or CREATE TEMPORARY SEQUENCE, we should not start
an InnoDB transaction for inserting the sequence status record into
the underlying no-rollback table. Because we did this, a debug assertion
failure would fail in START TRANSACTION WITH CONSISTENT SNAPSHOT after
CREATE TEMPORARY SEQUENCE was executed.

row_ins_step(): Do not start the transaction. Let the caller do that.

que_thr_step(): Start the transaction before calling row_ins_step().

row_ins_clust_index_entry(): Skip locking and undo logging for no-rollback
tables, even for temporary no-rollback tables.

row_ins_index_entry(): Allow trx->id==0 for no-rollback tables.

row_insert_for_mysql(): Do not start a transaction for no-rollback tables.