### Godot version

4.2.dev 5ee983188de97ae027f9b9c1443438063f708a7e

### System information

Windows 10 - Compatibility renderer 

### Issue description

When running a VR project sky contribution is not working in the compatibility renderer:

![image](https://github.com/godotengine/godot/assets/1945449/7aa19569-95c8-41a2-913b-37b81f4728a7)

It is working fine in normal mode. Can be worked around by setting sky contribution to 0 and providing an ambient color.

### Steps to reproduce

Try any project with a proper sky setup in XR, just switch to compatibility renderer.

### Minimal reproduction project

I'll try and create an MVP soon that can be used without XR hardware, but for now this can be used:
https://github.com/BastiaanOlij/godot_openxr_demo
LightInstance *light_instance = light_instance_owner.get_or_null(p_light_instance);
	ERR_FAIL_NULL(light_instance);
	ERR_FAIL_INDEX(p_pass, 6);
	light_instance->shadow_transform[p_pass].camera = p_projection;
	light_instance->shadow_transform[p_pass].transform = p_transform;
	light_instance->shadow_transform[p_pass].farplane = p_far;
	light_instance->shadow_transform[p_pass].split = p_split;
	light_instance->shadow_transform[p_pass].bias_scale = p_bias_scale;
	light_instance->shadow_transform[p_pass].range_begin = p_range_begin;
	light_instance->shadow_transform[p_pass].shadow_texel_size = p_shadow_texel_size;
	light_instance->shadow_transform[p_pass].uv_scale = p_uv_scale;
}
void LightStorage::light_instance_mark_visible(RID p_light_instance) {
	LightInstance *light_instance = light_instance_owner.get_or_null(p_light_instance);
	ERR_FAIL_NULL(light_instance);
	light_instance->last_scene_pass = RasterizerSceneGLES3::get_singleton()->get_scene_pass();
}
RID LightStorage::reflection_probe_allocate() {
	return RID();
}
void LightStorage::reflection_probe_initialize(RID p_rid) {
}
void LightStorage::reflection_probe_free(RID p_rid) {
}
void LightStorage::reflection_probe_set_update_mode(RID p_probe, RS::ReflectionProbeUpdateMode p_mode) {
}
void LightStorage::reflection_probe_set_intensity(RID p_probe, float p_intensity) {