### 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
if (updating) {
		return;
	}
	Variant array = object->get_array().duplicate();
	array.call("resize", int(p_page));
	emit_changed(get_edited_property(), array, "", false);
	update_property();
}
void EditorPropertyArray::_add_element() {
	_length_changed(double(object->get_array().call("size")) + 1.0);
}
void EditorPropertyArray::setup(Variant::Type p_array_type, const String &p_hint_string) {
	array_type = p_array_type;
	
	
	if (array_type == Variant::ARRAY && !p_hint_string.is_empty()) {
		int hint_subtype_separator = p_hint_string.find(":");
		if (hint_subtype_separator >= 0) {
			String subtype_string = p_hint_string.substr(0, hint_subtype_separator);
			int slash_pos = subtype_string.find("/");
			if (slash_pos >= 0) {
				subtype_hint = PropertyHint(subtype_string.substr(slash_pos + 1, subtype_string.size() - slash_pos - 1).to_int());
				subtype_string = subtype_string.substr(0, slash_pos);
			}
			subtype_hint_string = p_hint_string.substr(hint_subtype_separator + 1, p_hint_string.size() - hint_subtype_separator - 1);
			subtype = Variant::Type(subtype_string.to_int());
		}
	}
}
void EditorPropertyArray::_reorder_button_gui_input(const Ref<InputEvent> &p_event) {