### 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_statement == nullptr) {
		return;
	}
	switch (p_statement->type) {
		case GDScriptParser::Node::IF:
		case GDScriptParser::Node::FOR:
		case GDScriptParser::Node::MATCH:
		case GDScriptParser::Node::PATTERN:
		case GDScriptParser::Node::RETURN:
		case GDScriptParser::Node::WHILE:
			
			if (p_suite->get_datatype().is_set() && (p_suite->get_datatype() != p_statement->get_datatype())) {
				
				
				p_suite->datatype.kind = GDScriptParser::DataType::VARIANT;
				p_suite->datatype.type_source = GDScriptParser::DataType::UNDETECTED;
			} else {
				p_suite->set_datatype(p_statement->get_datatype());
				p_suite->datatype.type_source = GDScriptParser::DataType::INFERRED;
			}
			break;
		default:
			break;
	}
}
void GDScriptAnalyzer::resolve_suite(GDScriptParser::SuiteNode *p_suite) {