[landing] Wrap SIWE component with WagmiENSCacheProvider

Summary: Now ENS name appears correctly in ConnectedWalletInfo.

Test Plan:
ENSName appears in ConnectedWalletInfo as expected:

WagmiENSCacheProvider

Reviewers: ashoat, tomek

Reviewed By: ashoat

Differential Revision: https://phab.comm.dev/D6654