[v3] RPC Discovery

# Overview

Let's go V3 🎉!!!

This ticket is for tracking differences found while integrating v3 beta:

- `/block/${round}/hash` is no longer camel case when using `JSON.stringify`: (fixed by using `encodeJSON`)
- `healthCheck` is returning undefined and not an empty Object
- https://github.com/algorand/js-algorand-sdk/issues/885#issuecomment-2307226167
- `genesis` returns a `Promise` type and does not appear to encode properly with encodeJSON with spacing (see [getGenesis](https://use-algorand-react.vercel.app/algod/getGenesis))

Renders:
[Before](https://use-algorand-react-aolto4mvh-telluric.vercel.app) [After](https://use-algorand-react.vercel.app)

I will update this ticket if I run into any more while integrating.