Tidy up test output and prevent new noise (#810)
* Tidy up test output and prevent new noise
Original author Drew Walker
* tidy up a little more for intermittent failures due to live announcer again
* fixing a couple v2 warnings
omit some v2 tests because it's probably not worth addressing the actual reason for the warning and we do care about the warning in a v3 component, so we can't just ignore that warning
* remove a couple more v2 searchfield tests, if default value is supplied, then they emit a console warning about having both value and default value
* remove last defaultValue v2 SearchField
