[Cashtab] Include mocked chronik for render tests of useWallet hook

Summary:
T3444

Include proper mocked chronik for these tests. Catches another nice case where we expect token cache to update if there is token info in tx history that is not currently in cache. Also prevents all of the API errors from these tests.

Test Plan: npm test

Reviewers: #bitcoin_abc, PiRK

Reviewed By: #bitcoin_abc, PiRK

Differential Revision: https://reviews.bitcoinabc.org/D15517