[lib][landing][web] Update Rainbowkit, Wagmi, and Viem

Summary:
Followed the migration guides here and here. The most notable change is that react-query is now a peer dependency. The logic for generating the Wagmi config has also changed.

Depends on D11493

Test Plan: Tested SIWE on mobile and desktop

Reviewers: atul, ginsu

Reviewed By: ginsu

Subscribers: tomek

Differential Revision: https://phab.comm.dev/D11489