3D cuboid annotation export missing for simple shape objects

[vittoriacav]

Actions before raising this issue

• I searched the existing issues and did not find anything similar.
• I read/searched the docs

Steps to Reproduce

1. create a project with one label (type: any)
2. create a task for that project and upload a cloud pcd sample
3. annotate a cuboid selecting shape, not track and save
4. go to project > actions > export dataset > choose any format
5. the exported annotations won't show the 3d bbox just annotated

Notice that:

• doing the exact same thing choosing track instead of shape will work
• from API task.get_annotations() I see the shape I annotated