### 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 (p_drag_data["type"] != "nodes") {
		return false;
	}
	Array nodes = p_drag_data["nodes"];
	if (nodes.size() != 1) {
		return false;
	}
	Node *dropped_node = get_tree()->get_edited_scene_root()->get_node(nodes[0]);
	ERR_FAIL_NULL_V(dropped_node, false);
	if (valid_types.is_empty()) {
		
		return true;
	}
	for (const StringName &E : valid_types) {
		if (dropped_node->is_class(E) ||
				EditorNode::get_singleton()->is_object_of_custom_type(dropped_node, E)) {
			return true;
		}
	}
	return false;
}
void EditorPropertyNodePath::update_property() {