Fix regression on VibratorService update settings callback

A regression was introduced by ag/13111039 when the VibratorService
settings updated callback is triggered and any vibration is cancelled.

The fix brings back the check to only cancel the current vibration when
input devices change or while entering low power mode.

Fix: 176466887
Test: VibratorServiceTest
Change-Id: Ic9eb032c61bef446ebdfe265d3b55fe1d6f8bb96