Improve errors parsing when in Cluster mode

An example of such an error:

```
Code: 57. DB::Exception: There was an error on [clickhouse2:9000]: Code: 57. DB::Exception: Table default.command_test_2a751694160745f5aebe586c90b27515 already exists. (TABLE_ALREADY_EXISTS) (version 22.6.5.22 (official build)). (TABLE_ALREADY_EXISTS) (version 22.6.5.22 (official build))
```