### 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 suite;
}
GDScriptParser::Node *GDScriptParser::parse_statement() {
	Node *result = nullptr;
#ifdef DEBUG_ENABLED
	bool unreachable = current_suite->has_return && !current_suite->has_unreachable_code;
#endif
	bool is_annotation = false;
	switch (current.type) {
		case GDScriptTokenizer::Token::PASS:
			advance();
			result = alloc_node<PassNode>();
			complete_extents(result);
			end_statement(R"("pass")");
			break;
		case GDScriptTokenizer::Token::VAR:
			advance();
			result = parse_variable();
			break;
		case GDScriptTokenizer::Token::CONST:
			advance();
			result = parse_constant();
			break;
		case GDScriptTokenizer::Token::IF:
			advance();
			result = parse_if();
			break;
		case GDScriptTokenizer::Token::FOR:
			advance();
			result = parse_for();