Disable rocksdb_rpl.optimize_myrocks_replace_into

It requires @@enable_blind_replace which MariaDB doesn't support

storage/rocksdb/mysql-test/rocksdb_rpl/t/disabled.def

@@ -11,6 +11,7 @@ rpl_gtid_rocksdb_sys_header : MariaDB doesn't support printing "RocksDB: Last My
 singledelete_idempotent_recovery: MariaDB doesn't support --slave-use-idempotent-for-recovery
 rpl_mts_dependency_unique_key_conflicts: MariaDB doesn't support --slave-use-idempotent-for-recovery
 rpl_missing_columns_sk_update : Uses log_column_names=ON feature which is only present in FB/MySQL
+optimize_myrocks_replace_into: requires @@enable_blind_replace support.
 
 ##
 ##  Tests that do not fit MariaDB's test environment (Functional tests only,