### 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
ERR_FAIL_COND_V(instance == XR_NULL_HANDLE, RID());
	ActionSet action_set;
	action_set.name = p_name;
	action_set.is_attached = false;
	
	XrActionSetCreateInfo action_set_info = {
		XR_TYPE_ACTION_SET_CREATE_INFO, 
		nullptr, 
		"", 
		"", 
		uint32_t(p_priority) 
	};
	copy_string_to_char_buffer(p_name, action_set_info.actionSetName, XR_MAX_ACTION_SET_NAME_SIZE);
	copy_string_to_char_buffer(p_localized_name, action_set_info.localizedActionSetName, XR_MAX_LOCALIZED_ACTION_SET_NAME_SIZE);
	XrResult result = xrCreateActionSet(instance, &action_set_info, &action_set.handle);
	if (XR_FAILED(result)) {
		print_line("OpenXR: failed to create action set ", p_name, "! [", get_error_string(result), "]");
		return RID();
	}
	return action_set_owner.make_rid(action_set);
}
String OpenXRAPI::action_set_get_name(RID p_action_set) {
	if (p_action_set.is_null()) {
		return String("None");
	}
	ActionSet *action_set = action_set_owner.get_or_null(p_action_set);
	ERR_FAIL_NULL_V(action_set, String());
	return action_set->name;
}
bool OpenXRAPI::action_set_attach(RID p_action_set) {