Form: Nested JSON values are stored as string instead of integers

    public static function form(Form $form): Form
    {
        return $form
            ->schema([
                TextInput::make('config.file_expire_days')
                    ->integer()
                    ->default(30)
                    ->required(),        
            ]);
    }

    protected $casts = [
        'config' => 'array',
        'config->notify_project_expire_days' => 'array',
        'config->project_expire_days' => 'integer',
        'config->file_expire_days' => 'integer',
    ];