Construct decimal from i32

I think it would be clearer to use the constructors instead: https://docs.rs/parquet/latest/parquet/data_type/enum.Decimal.html#method.from_i32

```suggestion
let decimal = Decimal::from_i32(* v as i32, *p as i32, *s as i32)'
sbbf.check(&decimal)
```

(the same applies to the other types here as well)

_Originally posted by @alamb in https://github.com/apache/arrow-datafusion/pull/8930#discussion_r1462422283_

Start with the Decimal::from_i32 documentation linked in the issue and the code discussed in Arrow DataFusion PR #8930. Replace the current decimal construction with the constructor approach shown, apply the same treatment to the other types, and run the relevant checks or tests for the changed code.

Written by the indexing model from the issue text.