### 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

‮
GDScriptParser::DataType array_type = p_array_literal->get_datatype();
	if (p_array_literal->elements.size() == 0) {
		
		array_type.set_container_element_type(p_base_type.get_container_element_type());
	} else {
		
		bool all_same_type = true;
		bool all_have_type = true;
		GDScriptParser::DataType element_type;
		for (int i = 0; i < p_array_literal->elements.size(); i++) {
			if (i == 0) {
				element_type = p_array_literal->elements[0]->get_datatype();
			} else {
				GDScriptParser::DataType this_element_type = p_array_literal->elements[i]->get_datatype();
				if (this_element_type.has_no_type()) {
					all_same_type = false;
					all_have_type = false;
					break;
				} else if (element_type != this_element_type) {
					if (!is_type_compatible(element_type, this_element_type, false)) {
						if (is_type_compatible(this_element_type, element_type, false)) {
							
							element_type = this_element_type;