### 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
while (geometry_instance_dirty_list.first()) {
		_geometry_instance_update(geometry_instance_dirty_list.first()->self());
	}
}
void RasterizerSceneGLES3::_geometry_instance_dependency_changed(Dependency::DependencyChangedNotification p_notification, DependencyTracker *p_tracker) {
	switch (p_notification) {
		case Dependency::DEPENDENCY_CHANGED_MATERIAL:
		case Dependency::DEPENDENCY_CHANGED_MESH:
		case Dependency::DEPENDENCY_CHANGED_PARTICLES:
		case Dependency::DEPENDENCY_CHANGED_MULTIMESH:
		case Dependency::DEPENDENCY_CHANGED_SKELETON_DATA: {
			static_cast<RenderGeometryInstance *>(p_tracker->userdata)->_mark_dirty();
			static_cast<GeometryInstanceGLES3 *>(p_tracker->userdata)->data->dirty_dependencies = true;
		} break;
		case Dependency::DEPENDENCY_CHANGED_MULTIMESH_VISIBLE_INSTANCES: {
			GeometryInstanceGLES3 *ginstance = static_cast<GeometryInstanceGLES3 *>(p_tracker->userdata);
			if (ginstance->data->base_type == RS::INSTANCE_MULTIMESH) {
				ginstance->instance_count = GLES3::MeshStorage::get_singleton()->multimesh_get_instances_to_draw(ginstance->data->base);
			}
		} break;
		default: {
			
		} break;
	}
}
void RasterizerSceneGLES3::_geometry_instance_dependency_deleted(const RID &p_dependency, DependencyTracker *p_tracker) {