Elevate standby bucket on first foreground service start

If an app is in the NEVER standby bucket, a foreground service start
will bring the app up to the ACTIVE bucket for 30 min (by default).
Foreground service starts in other circumstances will not affect the
standby bucket

Bug: 111578623
Test: atest AppStandbyControllerTests#testInitialForegroundServiceTimeout

Change-Id: Ia9d5fd7a04d2378a5525457d465da7ed463fe8fc