How to manually make instanced shaders built?

I'm trying to set drawInstanced at runtime. But when I run the game in release mode, the terrain disappear. It's weird that instead of turning pink like other missing shader case, the terrain disappear.
According to this post:

I try making a dummy Terrain in the scene and set the drawInstanced of this dummy Terrain to true, and as expected, it works.
In case of missing shader, I can just add needed shader to a ScriptableObject, which is in my scene, to make Unity built the shader in release mode. So is there anyway I can tell Unity to build instanced shaders without having to include a dummy Terrain in my scene? (I'd like to include the instanced shaders to a ScriptableObject, but if the built is controlled by multi_compile, then I should find another way)

 

I manage to make the drawInstanced Terrain appear by adding the Terrain GPU Instancing material into the scene.

But the color of the terrain become darker in release mode. I need to figure out why it become darker...