### 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 (!dialog) {
		dialog = memnew(EditorFileDialog);
		dialog->connect("file_selected", callable_mp(this, &EditorPropertyPath::_path_selected));
		dialog->connect("dir_selected", callable_mp(this, &EditorPropertyPath::_path_selected));
		add_child(dialog);
	}
	String full_path = get_edited_object()->get(get_edited_property());
	dialog->clear_filters();
	if (global) {
		dialog->set_access(EditorFileDialog::ACCESS_FILESYSTEM);
	} else {
		dialog->set_access(EditorFileDialog::ACCESS_RESOURCES);
	}
	if (folder) {
		dialog->set_file_mode(EditorFileDialog::FILE_MODE_OPEN_DIR);
		dialog->set_current_dir(full_path);
	} else {
		dialog->set_file_mode(save_mode ? EditorFileDialog::FILE_MODE_SAVE_FILE : EditorFileDialog::FILE_MODE_OPEN_FILE);
		for (int i = 0; i < extensions.size(); i++) {
			String e = extensions[i].strip_edges();
			if (!e.is_empty()) {
				dialog->add_filter(extensions[i].strip_edges());
			}
		}
		dialog->set_current_path(full_path);
	}
	dialog->popup_file_dialog();
}
void EditorPropertyPath::update_property() {