### Godot version

3b086aa06

### System information

ArchLinux x11

### Issue description

```gdscript
extends Node

@export_group("My Properties")
@export var number = 3
@export var string = ""

@export_group("Prefixed Properties", "prefix_")
@export var prefix_number = 3
@export var prefix_string = ""

@export_group("", "")
@export var ungrouped_number = 3
```

![image](https://user-images.githubusercontent.com/70787919/214983963-528c415b-745b-47fc-9777-36ebe31a3060.png)


### Steps to reproduce

- create script
- @export_group
- go inspector

### Minimal reproduction project

‮
for (int i = 0; i < p_suite->statements.size(); i++) {
		GDScriptParser::Node *stmt = p_suite->statements[i];
		
		for (GDScriptParser::AnnotationNode *&E : stmt->annotations) {
			resolve_annotation(E);
			E->apply(parser, stmt);
		}
#ifdef DEBUG_ENABLED