Add optimizer trace to main/order_by_innodb.test to diagnose debian build issue

CURRENT_TEST: main.order_by_innodb

--- /<<PKGBUILDDIR>>/mysql-test/main/order_by_innodb.result	2022-11-14 18:10:21.000000000 +0000

+++ /<<PKGBUILDDIR>>/mysql-test/main/order_by_innodb.reject	2023-02-06 01:30:20.732947938 +0000

@@ -250,7 +250,7 @@

 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

 1	PRIMARY	t1	index	NULL	PRIMARY	4	NULL	#	Using index

 1	PRIMARY	t2	eq_ref	PRIMARY,id2	PRIMARY	4	func	#	Using where

-2	DEPENDENT SUBQUERY	dd	range	id2,for_latest_sort	for_latest_sort	6	NULL	#	Using where

+2	DEPENDENT SUBQUERY	dd	ref	id2,for_latest_sort	id2	4	test.t1.id	#	Using where; Using filesort

 drop table t1,t2,t3;