MDEV-28405 main.information_schema_tables fails sporadically with ER_NEED_REPREPARE or extra warning

Author: abarkov

mysql-test/t/information_schema_tables.test

@@ -24,9 +24,14 @@ LOOP
 END LOOP $
 --delimiter ;
 --connection default
+# Avoid "Prepared statement needs to be re-prepared"
+# Note, the code could probably eventually fixed to avoid forcing re-pepare if
+# the *temporary* instance of Sp_caches (not the permanent one) was invalidated.
+--disable_ps_protocol
 --disable_warnings
 SELECT v.* FROM v JOIN INFORMATION_SCHEMA.TABLES WHERE DATA_LENGTH = -1;
 --enable_warnings
+--enable_ps_protocol
 # Cleanup
 --replace_result $conid CONID
 --eval KILL $conid