fix(test): Fix `suggests emails via a tooltip` tests. (#4525) r=vladikoff
fix(test): Fix `suggests emails via a tooltip` tests. (#4525) r=vladikoff

When run in isolation, the `suggests emails via a tooltip` test failed
because `isInExperiment` and `isInExperimentGroup` were not correctly
set.
shane-tomlinson/fxa-content-server,mozilla/fxa-content-server,mozilla/fxa-content-server,shane-tomlinson/fxa-content-server,mozilla/fxa-content-server,shane-tomlinson/fxa-content-server