Crash in FPBDJointUtilities::ConditionInverseMassAndInertia

We seem to be setting the InverseInertia to zero, even though the InverseMass is non-zero.

FPBDJointUtilities::ConditionInverseMassAndInertia assumes that the inverse inertia is only zero if the inverse mass is zero.

This is probably caused by small objects combined with the logic in SetObjectState in PBDRIgidParticles.h

Unknown repro, speculatively:

• create a small dynamic physics object (less than 1cm) with a very small mass (less that 0.0001)
• Add a joint to it. Make sure Mass conditioning is enabled

Play in PIE - crash.