Fix failing "mail.google.com/chat" live test

`mail.google.com/chat` test fails on Semaphore with error `TimeoutError: Waiting for selector `a.gb_5d` failed: Waiting failed: 20000ms exceeded` (https://flowcrypt.semaphoreci.com/jobs/05a66dc8-67dd-404e-aec5-1a7a405efbd9).
Probably there were some selector changes in Gmail code.