### Godot version

v4.1.dev.custom_build.a7276f1ce

### System information

Win10, AMD 2600, GeForce GTX 1060, Vulkan API 1.3.205

### Issue description

I can't get correct color data from an array of source_color type.
The color data is saved as **Color** in the file:
`shader_parameter/palette = [Color (1, 0, 0, 1), Color (0, 1, 0, 1), Color (0, 0, 1, 1)]`
Shouldn't it be saved as PackedColorArray?


### Steps to reproduce

1.Declare an array of source_color type.
2.Set colors.

### Minimal reproduction project

[shadertest.zip](https://github.com/godotengine/godot/files/11246504/shadertest.zip)

return (
			p_type == TK_TYPE_VOID ||
			p_type == TK_TYPE_BOOL ||
			p_type == TK_TYPE_BVEC2 ||
			p_type == TK_TYPE_BVEC3 ||
			p_type == TK_TYPE_BVEC4 ||
			p_type == TK_TYPE_INT ||
			p_type == TK_TYPE_IVEC2 ||
			p_type == TK_TYPE_IVEC3 ||
			p_type == TK_TYPE_IVEC4 ||
			p_type == TK_TYPE_UINT ||
			p_type == TK_TYPE_UVEC2 ||
			p_type == TK_TYPE_UVEC3 ||
			p_type == TK_TYPE_UVEC4 ||
			p_type == TK_TYPE_FLOAT ||
			p_type == TK_TYPE_VEC2 ||
			p_type == TK_TYPE_VEC3 ||
			p_type == TK_TYPE_VEC4 ||
			p_type == TK_TYPE_MAT2 ||
			p_type == TK_TYPE_MAT3 ||
			p_type == TK_TYPE_MAT4);
}
bool ShaderLanguage::is_token_datatype(TokenType p_type) {