Fix drag and drop jank

[kevin49999]

TODO: Add a gif/recording

There is some jank when dragging and dropping items, usually from list to list but can happen within the same list. Have tried many different things and gone down the SO rabbithole but found nothing that fixes it.

Ideas: go through and drag and drop implementation step by step again, remove keyboard manager see if it's interfering? 🤷

[kevin49999]

https://stackoverflow.com/questions/48154984/why-does-my-uitableview-jump-when-inserting-or-removing-a-row

estimated row / section header height the issue

[kevin49999]

not closing yet, still this thing where when you move and item and immediately select it again, the anchor for where it was selected can be off (noticed even in Apple's Reminders app so may not be fixable on my end)