### 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

‮
return ClassDB::class_exists(p_class) && ClassDB::is_class_exposed(p_class);
}
Ref<GDScriptParserRef> GDScriptAnalyzer::get_parser_for(const String &p_path) {
	Ref<GDScriptParserRef> ref;
	if (depended_parsers.has(p_path)) {
		ref = depended_parsers[p_path];
	} else {
		Error err = OK;
		ref = GDScriptCache::get_parser(p_path, GDScriptParserRef::EMPTY, err, parser->script_path);
		if (ref.is_valid()) {
			depended_parsers[p_path] = ref;
		}
	}
	return ref;
}
Error GDScriptAnalyzer::resolve_inheritance() {
	
	for (GDScriptParser::AnnotationNode *&E : parser->head->annotations) {
		resolve_annotation(E);
		E->apply(parser, parser->head);
	}
	return resolve_class_inheritance(parser->head, true);
}
Error GDScriptAnalyzer::resolve_interface() {
	resolve_class_interface(parser->head, true);
	return parser->errors.is_empty() ? OK : ERR_PARSE_ERROR;
}
Error GDScriptAnalyzer::resolve_body() {