Apply PolySpatial Grounding Shadow (Vision OS)

[from2001]

PolySpatial Grounding Shadow ｜ PolySpatial visionOS
https://docs.unity3d.com/Packages/com.unity.polyspatial.visionos@0.7/manual/GroundingShadow.html

[from2001]

It seems only URP/Lit is supported for now

The shadows cast by PolySpatialGroundingShadow/GroundingShadowComponent only affect objects with Lit shaders (either shader graphs or built-in shaders like URP/Lit). We plan to add shadow support to the PolySpatial Lighting Node at some point, which would give you more options for shadows in Unlit shaders.
https://discussions.unity.com/t/polyspatialgroundingshadow-not-casting-shadows-on-meshes/316965/3

[from2001]

PolySpatialGroundingShadow worked with a object with Mesh renderer, but doesn’t work with Skinned mesh renderer. Would it be possible to make it compatible with Skinned mesh renderer in the next version at Unity side based on the architecture?

Casting shadow makes contents great, so I’d like to use the feature as much as I can.

https://discussions.unity.com/t/polyspatialgroundingshadow-not-casting-shadows-on-meshes/316965/6

[from2001]

Define scripting symbols based on Unity package existence.

https://docs.unity3d.com/Manual/ScriptCompilationAssemblyDefinitionFiles.html#define-symbols