Decentdb cannot cast a decimal value to text


Consider the following sql code:

```sql
select cast(cast(10.2 as Decimal(10,2)) as text);
```

In postgresql it returns 10.2 as text. In decentdb it does not work

select cast(cast(10.2 as Decimal(10,2)) as text);
SQL error: cannot cast Decimal { scaled: 102, scale: 1 } to TEXT

(this is important for the interaction with orms, etc.)

DecentDB version: 2.17.1
