Update to React v18

[mofojed]

https://react.dev/blog/2022/03/08/react-18-upgrade-guide

Some improvements we can expect:

• Better typings in generally, specifically from useCallback
  • Used to be typed as any in v17, it's more strict in v18.
  • Automatic batching: https://react.dev/blog/2022/03/08/react-18-upgrade-guide#automatic-batching

[mattrunyon]

More useful info including a codemod to help w/ types that may break w/ the upgrade DefinitelyTyped/DefinitelyTyped#56210

[mattrunyon]

react-beautiful-dnd may or may not work w/ React 18. They added it to the peer deps at least, but I vaguely recall some other issues w/ react 18 that people were having. If it doesn't work, we would either need to use a forked version (since it is no longer updated) or switch it out. We use @dnd-kit/core for the column grouping sidebar