This addresses ENG-5308, and fixes basename resolution (eg. ashoat.base.eth) in getNamesForAddresses (ENG-9569).
I wasn't able to update getAvatarURIForAddress to use ensjs; see context here. As a result, ENSCache currently needs both an Ethers.js provider and a Viem client to work. I added ENSWrapper as an abstraction layer over these.