Get profile service after receive silence mode change

Move get A2dp/Headset service logic from start to
handleSilenceDeviceStateChanged in case the services
are not ready at that moment.

Bug: 132839002
Test: atest BluetoothInstrumentationTests
Change-Id: Id6c2f205d81a69a09e8fc23c50f5df697d052c37
1 file changed