MDEV-17748 innodb.alter_inplace_perfschema fails in buildbot with wrong result

- Changed the performance schema query which gives sampling with event
counting. It should fix the issue.

mysql-test/suite/innodb/r/alter_inplace_perfschema.result

+select count_star into @init_count from performance_schema.events_waits_summary_global_by_event_name WHERE event_name LIKE '%wait%io%file%innodb%innodb_temp_file%';
 connect  ddl, localhost, root,,;
 update performance_schema.setup_instruments set enabled='yes';
 update performance_schema.setup_consumers set enabled='yes';
@@ -8,10 +9,10 @@ SET DEBUG_SYNC = 'row_log_apply_before SIGNAL go WAIT_FOR gone';
 ALTER TABLE t1 ADD INDEX(b), ALGORITHM=INPLACE;
 connection default;
 SET DEBUG_SYNC = 'now WAIT_FOR go';
-SELECT DISTINCT object_name FROM performance_schema.events_waits_history_long
-WHERE event_name LIKE '%wait%io%file%innodb%innodb_temp_file%';
-object_name
-tmp/Innodb Merge Temp File
+select count_star into @final_count from performance_schema.events_waits_summary_global_by_event_name WHERE event_name LIKE '%wait%io%file%innodb%innodb_temp_file%';
+SELECT @final_count - @init_count;
+@final_count - @init_count
+11
 SET DEBUG_SYNC = 'now SIGNAL gone';
 connection ddl;
 disconnect ddl;

mysql-test/suite/innodb/t/alter_inplace_perfschema.test

@@ -4,6 +4,7 @@
 --source include/have_debug_sync.inc
 --source include/not_embedded.inc
 
+select count_star into @init_count from performance_schema.events_waits_summary_global_by_event_name WHERE event_name LIKE '%wait%io%file%innodb%innodb_temp_file%';
 connect (ddl, localhost, root,,);
 update performance_schema.setup_instruments set enabled='yes';
 update performance_schema.setup_consumers set enabled='yes';
@@ -24,9 +25,10 @@ send ALTER TABLE t1 ADD INDEX(b), ALGORITHM=INPLACE;
 
 connection default;
 SET DEBUG_SYNC = 'now WAIT_FOR go';
---replace_regex /.*[\\\/]tmp/tmp/
-SELECT DISTINCT object_name FROM performance_schema.events_waits_history_long
-WHERE event_name LIKE '%wait%io%file%innodb%innodb_temp_file%';
+
+select count_star into @final_count from performance_schema.events_waits_summary_global_by_event_name WHERE event_name LIKE '%wait%io%file%innodb%innodb_temp_file%';
+
+SELECT @final_count - @init_count;
 
 #--exec lsof -p `pidof mysqld`
 SET DEBUG_SYNC = 'now SIGNAL gone';