Accessing form data in suffixAction form.

public function form(Form $form): Form
    {
        return $form
            ->schema([
              Forms\Components\Select::make('part')
                ->reactive()
                ->suffixAction(
                    Action::make('add')
                            ->action(function (array $data, Forms\Get $get) {
                                $get('part'); // returns correct value
                            })
                            ->form([
                                Forms\Components\Select::make('bom')
                                    ->live()
                                    ->options(function (Forms\Get $get, $state) use () {
                                        $get('part'); // is null
                                    })
                            ])
                    )