[Cashtab] Improve test match syntax for token actions

Summary:
Replace legacy matchers with more readable updated matchers.

In response to a test failure here in CI. Unlikely they matchers were the cause, but this is still an improvement.

Test Plan: npm test

Reviewers: #bitcoin_abc, Fabien

Reviewed By: #bitcoin_abc, Fabien

Differential Revision: https://reviews.bitcoinabc.org/D17678