[Bug in SDK]: Update child classes after the editing in Core/Batch::getTraversableList() (issue 246)

### version(s) affected

1.9.0

### Description

Update overloaded method getTraversableList() of child classes in BasketItem, Order, Task services.

### How to reproduce

Compare the code of the overloaded method with the method in Core/Batch class.

### Possible Solution

Make the code compatible with the parent method

### Additional Context

_No response_