### 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

‮
} else if (!result.is_meta_type) {
					push_error(vformat(R"(Member "%s" under base "%s" is not a valid type.)", p_type->type_chain[i]->name, base.to_string()), p_type->type_chain[1]);
					return bad_type;
				}
			}
		} else if (result.kind == GDScriptParser::DataType::NATIVE) {
			
			if (ClassDB::has_enum(result.native_type, p_type->type_chain[1]->name)) {
				if (p_type->type_chain.size() > 2) {
					push_error(R"(Enums cannot contain nested types.)", p_type->type_chain[2]);
					return bad_type;
				} else {
					result = make_native_enum_type(p_type->type_chain[1]->name, result.native_type);
				}
			} else {
				push_error(vformat(R"(Could not find type "%s" in "%s".)", p_type->type_chain[1]->name, first), p_type->type_chain[1]);
				return bad_type;
			}
		} else {
			push_error(vformat(R"(Could not find nested type "%s" under base "%s".)", p_type->type_chain[1]->name, result.to_string()), p_type->type_chain[1]);
			return bad_type;
		}
	}
	if (result.builtin_type != Variant::ARRAY && p_type->container_type != nullptr) {
		push_error("Only arrays can specify the collection element type.", p_type);
	}
	p_type->set_datatype(result);
	return result;
}
void GDScriptAnalyzer::resolve_class_member(GDScriptParser::ClassNode *p_class, StringName p_name, const GDScriptParser::Node *p_source) {