Wiggle Bones don't work correctly with SkeletonIK3D in 4.3

[HappyHeads]

Godot version

4.3 Stable

Issue description

I have a character that uses SkeletonIK3D to look around and has ears that wiggle. After I updated my project to 4.3 the ears stopped following the head, as if they are not attached to it. I suspect it has something to do with 4.3 switching to SkeletonModifier3D.

How the character suppose to look

In game where the character is looking to the side (notice the stretched ears)

Steps to reproduce

1. Open this demo project in 4.2.
2. In the editor press "Play IK" in the SkeletonIK3D.
3. Move IK_target around and see that the wiggle bones follow the head as they should.
4. Do the same in 4.3 and notice how the wiggle bones don't follow the head anymore.

wiggle_test.zip