Update slice states when on Voip calling

This CL is used to register intent of AudioManager.STREAM_DEVICES_CHANGED_ACTION
to know that phone is on VOIP call. When received this intent, media slice will
to update UI. Then if audio mode is on-going call, we will hide the slice UI.

Bug: 132198606
Test: Test: make -j42 RunSettingsRoboTests
Change-Id: Ic17ebd319b3da8f42089d36ba530cfb57c93c4c6