New Physics in Namespaced Scene

[mottosso]

Seems to be a bug whereby if there exists a scene with a namespace, no more physics can be created.

Ragdoll 2021.06.10

# Traceback (most recent call last):
#   File "<maya console>", line 2, in <module>
#   File "C:\gitlab\ragdollai\ragdoll-dynamics\python\ragdoll\internal.py", line 422, in _undo_chunk
#     return func(*args, **kwargs)
#   File "C:\gitlab\ragdollai\ragdoll-dynamics\python\ragdoll\interactive.py", line 1150, in create_active_rigid
#     scene = _find_current_scene()
#   File "C:\gitlab\ragdollai\ragdoll-dynamics\python\ragdoll\interactive.py", line 859, in _find_current_scene
#     current = __.solvers.index(scene.shortestPath())
# ValueError: u'_:rSceneShape' is not in list #