Correct processing to apply crypt redo logs

If a table has redo logs on page 0 which is not flushed to disk and we killed the server

During recovery, it is not applying redo logs on page 0 properly.

start the ps debug server.

set global innodb_page_cleaner_disabled_debug=on;
drop table t4; create table t4(i int) encryption='n';
Query OK, 0 rows affected (0.03 sec)

Kill server

and restart PSB ENCRYPTION_KEY_MAGIC_PS_V2 is missing from page 0.
grep PSB t4.ibd