GenieSim Generator: `primitive_call` generated objects cannot be processed by `app.py`

[SSQaaa]

primitive_call generated objects cannot be processed by app.py

When using GenieSimGenerator to create scene objects through primitive_call, the generated primitive objects cannot be processed correctly by the current scene generation pipeline.

Objects loaded from GenieSimAssets contain an asset id, but objects generated by primitive_call do not contain this field. However, gen_scene_layout_info() assumes that every scene object has:

obj["info"]["info"]["id"]

As a result, scenes containing primitive objects fail during scene layout processing with the following error:

[INFO] Implementing primitive_call...
Traceback (most recent call last):
  File ".../geniesim_generator/app.py", line 122, in <module>
    main(args)
  File ".../geniesim_generator/app.py", line 47, in main
    scene_info, G = gen_scene_layout_info(scene_data)
  File ".../geniesim_generator/helper.py", line 211, in gen_scene_layout_info
    _id = obj["info"]["info"]["id"]
KeyError: 'id'

The issue is likely caused by gen_scene_layout_info() assuming that all scene objects originate from GenieSimAssets and therefore have a valid asset ID:

_id = obj["info"]["info"]["id"]

Objects generated through primitive_call should be supported by the same scene generation pipeline as asset-based objects, without requiring a GenieSimAssets ID.