Rotating constraints in PhAT rotates both reference frames

Rotating constraints in PhAT rotates both reference frames. This behavior was previously enabled by holding ALT while rotating, as indicated by an on screen message in PhAT, but has now become the default and the message has been removed. The old behavior can be achieved by holding ALT to rotate only one reference frame, but this is not indicated anywhere.

• Open the mannequin's physics asset.
• Simulate the lowerarm_l, noticing how it is constrained.
• Rotate the lowerarm_l: upperarm_l constraint 180 degress around its relative Z axis.
• Simulate the lowerarm_l, noticing how it is constrained.

Expected: The arm is constrained in the opposite direction as originally.

Result: The arm is constrained the same as originally

This is a regression from 4.20 and can be worked around by holding ALT while rotating.