Setting replace_long_file_name_to_hash Enabled by Default for MergeTree Tables

Setting replace_long_file_name_to_hash is enabled by default for MergeTree tables. #64457 (Anton Popov). This setting is fully compatible, and no actions needed during upgrade. The new data format is supported from all versions starting from 23.9. After enabling this setting, you can no longer downgrade to a version 23.8 or older.