Improve Touchscreen Usability: Lock Custom Slide Order Feature

Being able to customize the order of the song lyrics slides is incredibly helpful. However, since we use Presenter on a touchscreen, we occasionally run into usability issues specifically when using a custom arrangement.

While the original slide order works perfectly fine, scrolling through a custom slide order sometimes accidentally shifts the layout. Additionally, in this custom view, tapping a slide to display it often registers as a drag-and-drop action instead of switching to the selected slide.

Because of this, it would be a huge help if there was a feature to lock the slide order in place. This would prevent the layout from shifting accidentally during touchscreen use.