### 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
case XR_TYPE_EVENT_DATA_INSTANCE_LOSS_PENDING: {
				XrEventDataInstanceLossPending *event = (XrEventDataInstanceLossPending *)&runtimeEvent;
				
				
				print_verbose(String("OpenXR EVENT: instance loss pending at ") + itos(event->lossTime));
				return false;
			} break;
			case XR_TYPE_EVENT_DATA_SESSION_STATE_CHANGED: {
				XrEventDataSessionStateChanged *event = (XrEventDataSessionStateChanged *)&runtimeEvent;
				session_state = event->state;
				if (session_state >= XR_SESSION_STATE_MAX_ENUM) {
					print_verbose(String("OpenXR EVENT: session state changed to UNKNOWN - ") + itos(session_state));
				} else {
					print_verbose(String("OpenXR EVENT: session state changed to ") + OpenXRUtil::get_session_state_name(session_state));
					switch (session_state) {
						case XR_SESSION_STATE_IDLE:
							on_state_idle();
							break;
						case XR_SESSION_STATE_READY:
							on_state_ready();
							break;
						case XR_SESSION_STATE_SYNCHRONIZED:
							on_state_synchronized();
							break;
						case XR_SESSION_STATE_VISIBLE:
							on_state_visible();
							break;
						case XR_SESSION_STATE_FOCUSED:
							on_state_focused();
							break;