Kinematic colliders freeze on main.

[StarArawn]

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Description:

Per title the kinematic collider freezes on main. I also notice this in my own project.

Reproduction steps:

1. Run the kinematic_character_3d example.
2. Attempt to jump or walk up the steep slope.

Videos:

Bevy 0.16.0-rc.1:

https://github.com/user-attachments/assets/a640e993-978e-475a-b4cf-77bcbfb54303

Bevy 0.15:

https://github.com/user-attachments/assets/8ac8ec71-26dc-4263-b134-2056fc7635e9