### 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

‮
} else {
					push_error(R"(Cannot use another enum element before it was declared.)", p_identifier);
				}
				return; 
			}
		}
	}
	bool found_source = false;
	
	
	switch (p_identifier->source) {
		case GDScriptParser::IdentifierNode::FUNCTION_PARAMETER:
			p_identifier->set_datatype(p_identifier->parameter_source->get_datatype());
			found_source = true;
			break;
		case GDScriptParser::IdentifierNode::LOCAL_CONSTANT:
		case GDScriptParser::IdentifierNode::MEMBER_CONSTANT:
			p_identifier->set_datatype(p_identifier->constant_source->get_datatype());
			p_identifier->is_constant = true;
			
			p_identifier->reduced_value = p_identifier->constant_source->initializer->reduced_value;
			found_source = true;
			break;
		case GDScriptParser::IdentifierNode::MEMBER_SIGNAL:
		case GDScriptParser::IdentifierNode::INHERITED_VARIABLE:
			mark_lambda_use_self();
			break;
		case GDScriptParser::IdentifierNode::MEMBER_VARIABLE:
			mark_lambda_use_self();
			p_identifier->variable_source->usages++;