Root cause: Show default status until setting key changed. It does not
show latest status when created.
Solution: Update the status when created.
Bug: 229566130
Test: make RunSettingsRoboTests ROBOTEST_FILTER=FloatingMenuTransparencyPreferenceControllerTest
Change-Id: Ia25fe5cec0444c1771e8ce31aae2a4cb3b0405a1