### 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

‮
#endif
			break;
		}
	}
	while (!is_annotation && result != nullptr && !annotation_stack.is_empty()) {
		AnnotationNode *last_annotation = annotation_stack.back()->get();
		if (last_annotation->applies_to(AnnotationInfo::STATEMENT)) {
			result->annotations.push_front(last_annotation);
			annotation_stack.pop_back();
		} else {
			push_error(vformat(R"(Annotation "%s" cannot be applied to a statement.)", last_annotation->name));
			clear_unused_annotations();
		}
	}
#ifdef DEBUG_ENABLED
	if (unreachable && result != nullptr) {
		current_suite->has_unreachable_code = true;
		if (current_function) {
			push_warning(result, GDScriptWarning::UNREACHABLE_CODE, current_function->identifier ? current_function->identifier->name : "<anonymous lambda>");
		} else {
			
		}
	}
#endif
	if (panic_mode) {
		synchronize();
	}
	return result;
}
GDScriptParser::AssertNode *GDScriptParser::parse_assert() {