### Godot version

4.0 Beta 11

### System information

Windows 10 version 22H2, GeForce Game Ready Driver Version 528.02, GTX 1070

### Issue description

Since Beta 11 this error is given whenever a project is run in the forward+ renderer with OpenXR enabled. This error is not present with Beta 10 and previous versions.
![image](https://user-images.githubusercontent.com/38119387/212044209-1179b908-f010-47a1-ae53-bc2faadc30de.png)

I've tested with projects created in previous versions as well as the current version (Beta 11)

### Steps to reproduce

Create project, enable OpenXR in project settings, and run.

### Minimal reproduction project

N/A
destroy_session();
	destroy_instance();
}
void OpenXRAPI::set_xr_interface(OpenXRInterface *p_xr_interface) {
	xr_interface = p_xr_interface;
}
void OpenXRAPI::register_extension_wrapper(OpenXRExtensionWrapper *p_extension_wrapper) {
	registered_extension_wrappers.push_back(p_extension_wrapper);
}
void OpenXRAPI::register_extension_metadata() {
	for (OpenXRExtensionWrapper *extension_wrapper : registered_extension_wrappers) {
		extension_wrapper->on_register_metadata();
	}
}
void OpenXRAPI::cleanup_extension_wrappers() {
	for (OpenXRExtensionWrapper *extension_wrapper : registered_extension_wrappers) {
		memdelete(extension_wrapper);
	}
	registered_extension_wrappers.clear();
}
Size2 OpenXRAPI::get_recommended_target_size() {
	ERR_FAIL_NULL_V(view_configuration_views, Size2());
	Size2 target_size;
	target_size.width = view_configuration_views[0].recommendedImageRectWidth;
	target_size.height = view_configuration_views[0].recommendedImageRectHeight;
	return target_size;
}
XRPose::TrackingConfidence OpenXRAPI::get_head_center(Transform3D &r_transform, Vector3 &r_linear_velocity, Vector3 &r_angular_velocity) {