### 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
picker->set_edit_alpha(p_show_alpha);
}
EditorPropertyColor::EditorPropertyColor() {
	picker = memnew(ColorPickerButton);
	add_child(picker);
	picker->set_flat(true);
	picker->connect("color_changed", callable_mp(this, &EditorPropertyColor::_color_changed));
	picker->connect("popup_closed", callable_mp(this, &EditorPropertyColor::_popup_closed));
	picker->get_popup()->connect("about_to_popup", callable_mp(EditorNode::get_singleton(), &EditorNode::setup_color_picker).bind(picker->get_picker()));
	picker->get_popup()->connect("about_to_popup", callable_mp(this, &EditorPropertyColor::_picker_opening));
}
void EditorPropertyNodePath::_set_read_only(bool p_read_only) {