### 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
}
EditorPropertyEasing::EditorPropertyEasing() {
	easing_draw = memnew(Control);
	easing_draw->connect("draw", callable_mp(this, &EditorPropertyEasing::_draw_easing));
	easing_draw->connect("gui_input", callable_mp(this, &EditorPropertyEasing::_drag_easing));
	easing_draw->set_default_cursor_shape(Control::CURSOR_MOVE);
	add_child(easing_draw);
	preset = memnew(PopupMenu);
	add_child(preset);
	preset->connect("id_pressed", callable_mp(this, &EditorPropertyEasing::_set_preset));
	spin = memnew(EditorSpinSlider);
	spin->set_flat(true);
	spin->set_min(-100);
	spin->set_max(100);
	spin->set_step(0);
	spin->set_hide_slider(true);
	spin->set_allow_lesser(true);
	spin->set_allow_greater(true);
	spin->connect("value_changed", callable_mp(this, &EditorPropertyEasing::_spin_value_changed));
	spin->get_line_edit()->connect("focus_exited", callable_mp(this, &EditorPropertyEasing::_spin_focus_exited));
	spin->hide();
	add_child(spin);
}
void EditorPropertyVector2::_set_read_only(bool p_read_only) {