**How to reproduce**
Clickhouse version 21.5

```
cat /etc/clickhouse-server/users.xml
<?xml version="1.0"?>
<yandex>
    <!-- Profiles of settings. -->
    <profiles>
        <!-- Default settings. -->
        <default>
            <data_type_default_nullable>1</data_type_default_nullable>
            <load_balancing>random</load_balancing>
        </default>
....

2021.04.04 01:23:42.453678 [ 29048 ] {} <Error> Application: DB::Exception: Nested type Array(UInt64) cannot be inside Nullable type: Cannot attach table `system`.`crash_log` from metadata file /var/lib/clickhouse/metadata/system/crash_log.sql from query ATTACH TABLE system.crash_log (`event_date` Date, `event_time` DateTime, `timestamp_ns` UInt64, `signal` Int32, `thread_id` UInt64, `query_id` String, `trace` Array(UInt64), `trace_full` Array(String), `version` String, `revision` UInt32, `build_id` String) ENGINE = MergeTree ORDER BY (event_date, event_time) SETTINGS index_granularity = 8192: while loading database `system` from path /var/lib/clickhouse/metadata/system
```
for (const auto & name_and_type_pair : properties.columns.getAllPhysical())
        {
            WhichDataType which(*name_and_type_pair.type);
            if (which.IsBigIntOrDeimal())
            {
                const auto & type_name = name_and_type_pair.type->getName();
                String message = "Cannot create table with column '" + name_and_type_pair.name + "' which type is '"
                                 + type_name + "' because experimental bigint types are not allowed. "
                                 + "Set 'allow_experimental_bigint_types' setting to enable.";
                throw Exception(message, ErrorCodes::ILLEGAL_COLUMN);
            }
        }
    }
    if (!create.attach && !settings.allow_experimental_map_type)
    {
        for (const auto & name_and_type_pair : properties.columns.getAllPhysical())
        {
            WhichDataType which(*name_and_type_pair.type);
            if (which.isMap())
            {
                const auto & type_name = name_and_type_pair.type->getName();
                String message = "Cannot create table with column '" + name_and_type_pair.name + "' which type is '"
                                 + type_name + "' because experimental Map type is not allowed. "
                                 + "Set 'allow_experimental_map_type = 1' setting to enable";
                throw Exception(message, ErrorCodes::ILLEGAL_COLUMN);
            }
        }
    }
}
void InterpreterCreateQuery::setEngine(ASTCreateQuery & create) const