b25f8433fe
The relpose in mujoco represents the anchor in body1 space and the relative orientation of body2 in body1 space. Previously we were computing it as the relative position of body2 from body1 space. Further, we now properly account for the setting of strictly the anchor and not the relpos by setting localPos0 *only*. PiperOrigin-RevId: 878506356 Change-Id: I83fc7e97cd1a891e17f0bb091f8950b581be0e01