[VL] Result mismatch when extracting object or array using get_json_object

### Backend

VL (Velox)

### Bug description

Reproducing SQL: `select get_json_object('[{"a": "1"}, {"a": "2"}]', "$")`

Spark result is `[{"a":"1"},{"a":"2"}]`, but gluten result is `[{"a": "1"}, {"a": "2"}]` that contains extra whitespace.

### Spark version

Spark-3.5.x

### Spark configurations

_No response_

### System information

_No response_

### Relevant logs

```bash

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