Flaky test: useSelectedTransactionsActions.test.ts

[roryabraham]

Problem

useSelectTransactionsActions.test.ts is sometimes flaky: example.

Solution

Diagnose and fix the flakiness.

[melvin-bot]

This issue has not been updated in over 15 days. @roryabraham eroding to Monthly issue.

P.S. Is everyone reading this sure this is really a near-term priority? Be brave: if you disagree, go ahead and close it out. If someone disagrees, they'll reopen it, and if they don't: one less thing to do!