improve the text slightly

feat: allow walletconnect on testnets (Uniswap#1389)

* try walletconnect multinetwork

* clean up environment variables for multinetwork

* remove irrelevant config

* move some stuff around

Co-authored-by: Noah Zinsmeister <[email protected]>

fixes Uniswap#1386

fix access of undefined property

fix: show better errors