Bug: Refract shader casts opaque CSM shadows

[lenship2]

Describe the bug

This is a custom model that uses refract for the glass, and as seen here it casts opaque shadows where it shouldn't under CSM.

This issue is specific to CSM and doesn't appear on clustered shadows.

To Reproduce

1. Have the light from an env_cascade_light shine through a refracting material
2. Observe shadows casted by the visibly transparent material

Issue Map

N/A

Expected Behavior

Refracting materials should not cast opaque shadows under CSM, with the possible exception of $localrefract

Operating System

No response