Open the settings page for a specific physical keyboard

1. Check open from a notification
2. Check open from Bluetooth entry
3. If the inputDeviceIdentifier is not null, open the next page
   directly.
4. Add extra to record the class of sender for the future metrics.

Demo: http://screencast/cast/NDU4MTYxOTIzMTg4MzI2NHxiYTQ0ODE5Ny02YQ

Bug: 269212353
Test: manual, atest
[Pass] atest KeyboardSettingsPreferenceControllerTest
[Pass] atest PhysicalKeyboardPreferenceControllerTest

Change-Id: Ie874003260896bbb949806623913e70486e4731d