Poses Asset UI doesn't update correctly when updating from new source animation

If the user updates to a new Source Animation for a pose asset, while a pose was active in the viewport (weight set to 1.0), the pose will be set to 0.0 in the pose list even though it's still active in the viewport.

It will look correct in the Anim Curve Previewer however.

1. Launch QAGame in editor.
2. Right-click an animation sequence and select Create > Create PoseAsset.
3. Open the pose asset in Persona.
4. Double-click any pose to set the weight to 1.0.
5. In the Anim Asset Details, select another animation sequence and click Update Source.

RESULT:

The pose asset updates to the new source animation. The pose that was active is still active and showing the correct pose, but in the pose list, that pose is set to 0.0