restore transform when EIO_SkipDOFValues and not added to env

[eisoku9618]

@rdiankov cc @yoshikikanemoto @kanbouchou @ziyan Since d841c7633ec34cbd95c6486811eb2d5401b198ad commit, users can call KinBody::ExtractInfo() whenever body is not added to environment. This has a side effect that the transform is reset to identity because

1. KinBody::KinBodyStateSaver::~KinBodyStateSaver() does not do anything when body is not added to environment
2. KinBody::ExtractInfo() interanally set tranform to identity and DOFs to zeros in order to collect KinBodyInfo relying on KinBodyStateSaver

As a result, just calling KinBody::ExtractInfo() to a body which is not added to env resets its transform.

body = RaveCreateKinBody(env, '')
body.InitFromBoxes([[0,0,0,1,1,1]])
body.SetTransform([1,0,0,0,1,2,3])
print('before: %r' % body.GetTransformPose())
body.ExtractInfo(ExtractInfoOptions.SkipDOFValues)
print('after: %r' % body.GetTransformPose())

before: array([1., 0., 0., 0., 1., 2., 3.])
after: array([1., 0., 0., 0., 0., 0., 0.])

With this PR, we can restore at least transform and warn about DOF resetting.

related discussion

• https://github.com/rdiankov/openrave/pull/1316#issuecomment-1749914852

[rdiankov]

thanks~