[Bug]: JSON input - transform cannot retrieve number of elements in an array

### Apache Hop version?

2.3

### Java version?

11

### Operating system

Windows

### What happened?

Migration: https://issues.apache.org/jira/browse/HOP-4076

In a JSON containing an array, "length()" should retrieve the number of array elements, which works flawlessly using [https://jsonpath.herokuapp.com/] on the attached input file using an "$.someArray.length() " path, returning 2 as the correct number of array elements.

However, using the HOP JSON input parser, is returned.

For reproducing the issue, see the notes in the attached pipeline.

[Archive.zip](https://github.com/apache/hop/files/10741980/Archive.zip)

### Issue Priority

Priority: 3

### Issue Component

Component: Transforms

Start by opening the attached Archive.zip and following the reproduction notes in its pipeline. Then trace the JSON input parser's handling of the $.someArray.length() path and compare it with the expected array length of 2. Done means the parser returns 2 instead of null for this input.

Written by the indexing model from the issue text.