### 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

‮
if (match(GDScriptTokenizer::Token::ELIF)) {
		SuiteNode *else_block = alloc_node<SuiteNode>();
		IfNode *elif = parse_if("elif");
		else_block->statements.push_back(elif);
		complete_extents(else_block);
		n_if->false_block = else_block;
	} else if (match(GDScriptTokenizer::Token::ELSE)) {
		consume(GDScriptTokenizer::Token::COLON, R"(Expected ":" after "else".)");
		n_if->false_block = parse_suite(R"("else" block)");
	}
	complete_extents(n_if);
	if (n_if->false_block != nullptr && n_if->false_block->has_return && n_if->true_block->has_return) {
		current_suite->has_return = true;
	}
	if (n_if->false_block != nullptr && n_if->false_block->has_continue) {
		current_suite->has_continue = true;
	}
	return n_if;
}
GDScriptParser::MatchNode *GDScriptParser::parse_match() {
	MatchNode *match = alloc_node<MatchNode>();
	match->test = parse_expression(false);
	if (match->test == nullptr) {
		push_error(R"(Expected expression to test after "match".)");
	}
	consume(GDScriptTokenizer::Token::COLON, R"(Expected ":" after "match" expression.)");
	consume(GDScriptTokenizer::Token::NEWLINE, R"(Expected a newline after "match" statement.)");
	if (!consume(GDScriptTokenizer::Token::INDENT, R"(Expected an indented block after "match" statement.)")) {
		complete_extents(match);
		return match;