### 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 (p_is_elif) {
		push_text("Elif ");
	} else {
		push_text("If ");
	}
	print_expression(p_if->condition);
	push_line(" :");
	increase_indent();
	print_suite(p_if->true_block);
	decrease_indent();
	
	if (p_if->false_block != nullptr) {
		push_line("Else :");
		increase_indent();
		print_suite(p_if->false_block);
		decrease_indent();
	}
}
void GDScriptParser::TreePrinter::print_lambda(LambdaNode *p_lambda) {
	print_function(p_lambda->function, "Lambda");
	push_text("| captures [ ");
	for (int i = 0; i < p_lambda->captures.size(); i++) {
		if (i > 0) {
			push_text(" , ");
		}
		push_text(p_lambda->captures[i]->name.operator String());
	}
	push_line(" ]");
}
void GDScriptParser::TreePrinter::print_literal(LiteralNode *p_literal) {