### 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
assign->set_icon(Ref<Texture2D>());
		assign->set_text(p);
		return;
	}
	Node *target_node = base_node->get_node(p);
	ERR_FAIL_COND(!target_node);
	if (String(target_node->get_name()).contains("@")) {
		assign->set_icon(Ref<Texture2D>());
		assign->set_text(p);
		return;
	}
	assign->set_text(target_node->get_name());
	assign->set_icon(EditorNode::get_singleton()->get_object_icon(target_node, "Node"));
}
void EditorPropertyNodePath::setup(const NodePath &p_base_hint, Vector<StringName> p_valid_types, bool p_use_path_from_scene_root, bool p_pointer_mode) {
	pointer_mode = p_pointer_mode;
	base_hint = p_base_hint;
	valid_types = p_valid_types;
	use_path_from_scene_root = p_use_path_from_scene_root;
}
void EditorPropertyNodePath::_notification(int p_what) {
	switch (p_what) {
		case NOTIFICATION_ENTER_TREE:
		case NOTIFICATION_THEME_CHANGED: {
			Ref<Texture2D> t = get_theme_icon(SNAME("Clear"), SNAME("EditorIcons"));
			clear->set_icon(t);
		} break;
	}
}
void EditorPropertyNodePath::_bind_methods() {