Use AES with CTR mode to encrypt temporary files created when
binary log caches spill to disk when binlog_encryption is on.
Client sessions will have their binary log caches unencrypted
when binlog_encryption is off and client sessions will have
their binary log caches encrypted when binlog_encryption is on.
Every time a transaction commits, it requests its binlog cache
to be reset. On this reset operation, the binlog cache shall
check `binlog_encryption` value to enable or disable its
encryption, and close the ciphers and open them again using
new password and IV when binlog_encryption is on.

RB: 21577