### Godot version

4.0.beta13 (caacade56)

### System information

Windows 10

### Issue description

Seems like this was missed in #62011 and #70540. `@export_multiline` should also support the PackedStringArray datatype on top of Array[String] and Dictionary, but it doesn't, instead giving the error `"@export_multiline" annotation requires a variable of type "String" but type "PackedStringArray" was given instead.`

### Steps to reproduce

Create a PackedStringArray with the `@export_multiline` annotation.
```gdscript
@export_multiline var npc_dialog: PackedStringArray
```

### Minimal reproduction project

N/A
Button *button = Object::cast_to<Button>(p_button);
	Rect2 rect = button->get_screen_rect();
	change_type->reset_size();
	change_type->set_position(rect.get_end() - Vector2(change_type->get_contents_minimum_size().x, 0));
	change_type->popup();
	changing_type_index = p_index;
}
void EditorPropertyDictionary::_add_key_value() {
	
	if (object->get_new_item_key().get_type() == Variant::NIL) {
		return;
	}
	Dictionary dict = object->get_dict().duplicate();
	dict[object->get_new_item_key()] = object->get_new_item_value();
	object->set_new_item_key(Variant());
	object->set_new_item_value(Variant());
	emit_changed(get_edited_property(), dict, "", false);
	update_property();
}
void EditorPropertyDictionary::_change_type_menu(int p_index) {