fix(MessageBar): Add onChange for when microphone completes #701

Job	Run time
call-build-lint-test-workflow / build	27s
call-build-lint-test-workflow / lint	25s
call-build-lint-test-workflow / test_jest	1m 17s
call-build-lint-test-workflow / test_a11y	1m 28s
	3m 37s

Provide feedback