### 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
#include "rasterizer_scene_gles3.h"
#include "drivers/gles3/effects/copy_effects.h"
#include "rasterizer_gles3.h"
#include "storage/config.h"
#include "storage/mesh_storage.h"
#include "storage/particles_storage.h"
#include "storage/texture_storage.h"
#include "core/config/project_settings.h"
#include "core/templates/sort_array.h"
#include "servers/rendering/rendering_server_default.h"
#include "servers/rendering/rendering_server_globals.h"
#ifdef GLES3_ENABLED
RasterizerSceneGLES3 *RasterizerSceneGLES3::singleton = nullptr;
RenderGeometryInstance *RasterizerSceneGLES3::geometry_instance_create(RID p_base) {
	RS::InstanceType type = RSG::utilities->get_base_type(p_base);
	ERR_FAIL_COND_V(!((1 << type) & RS::INSTANCE_GEOMETRY_MASK), nullptr);
	GeometryInstanceGLES3 *ginstance = geometry_instance_alloc.alloc();
	ginstance->data = memnew(GeometryInstanceGLES3::Data);
	ginstance->data->base = p_base;
	ginstance->data->base_type = type;
	ginstance->data->dependency_tracker.userdata = ginstance;
	ginstance->data->dependency_tracker.changed_callback = _geometry_instance_dependency_changed;
	ginstance->data->dependency_tracker.deleted_callback = _geometry_instance_dependency_deleted;
	ginstance->_mark_dirty();
	return ginstance;
}
uint32_t RasterizerSceneGLES3::geometry_instance_get_pair_mask() {