[Bug]: reading an Oracle NUMBER(20,10) in 2.19 infers "Number" instead of "BigNumber" (as in 2.18)

### Apache Hop version?

2.19

### Java version?

OpenJDK 21

### Operating system

Windows

### What happened?

A column declared ``NUMBER(20,10)`` in an Oracle source database is read by a table-input transform.
In 2.18:
- the column is interpreted as ``BigNumber`` by the table-input and precision is kept
- Integer-conversion via select-values transform truncates the decimal part, even if the first decimal digit is >= 5

In 2.19:
- the column is interpreted as ``Number`` by the table-input, and some precision (last 3 digits) is lost
- Integer-conversion via select-values transform rounds up for first decimal digit is >= 5

[test-number.zip](https://github.com/user-attachments/files/32013792/test-number.zip)

### How to reproduce:

- in an Oracle DB, create and fill a table like:

```
create table EBI_TEST
(
ID integer,
ZOOM number(20,10)
);

insert into EBI_TEST values (4633913, 10.0770307123);
insert into EBI_TEST values (4565613, 0.5000007155);
insert into EBI_TEST values (5090200, 1234567890.0987654321);
commit;
```
- adapt the connection of the table-input of the attached to your setting/infrastracture

- run the pipeline in both 2.18 and 2.19

- compare the output by the write-to-log transform of the attached pipeline (especially the ``(!!!)`` marked lines in the note)

- 2.18: you see correctly "BigNumber" data type for ZOOM, no precision loss, and integer-conversion that truncates the decimal part
- 2.19: you (wrongly?) see "Number" data type for ZOOM, precision loss in the last 3 digits, and integer-conversion that partly rounds up

### Issue Priority

Priority: 2

### Issue Component

Component: Transforms

Start by running the attached test-number.zip pipeline against Oracle on 2.19 and compare its table-input and select-values output with 2.18. Trace how the table-input transform handles Oracle NUMBER(20,10); done means ZOOM remains BigNumber without precision loss and integer conversion matches the 2.18 behavior.

Written by the indexing model from the issue text.