MDEV-31003: Second execution for ps-protocol

This patch adds for "--ps-protocol" second execution
of queries "SELECT".
Also in this patch it is added ability to disable/enable
(--disable_ps2_protocol/--enable_ps2_protocol) second
execution for "--ps-prototocol" in testcases.

mysql-test/main/errors.test

@@ -94,8 +94,10 @@ end|
 delimiter ;|
 
 flush status;
+--disable_ps2_protocol
 --error 1062
 select f1(), f2();
+--enable_ps2_protocol
 show status like 'Com_insert';
 select * from t1;
 select * from t2;