Add haptic effect for the seekbar in Settings 4/n.

- in Font size/Display size, perform haptic feedback as the seekbar's progress value is updated.
- screenshot, https://screenshot.googleplex.com/6tcD7a9hvCcWaui
- screenshot, https://screenshot.googleplex.com/89y4Q3RXskyajnL

Bug: 174109628
Test: make -j42 RunSettingsRoboTests ROBOTEST_FILTER=LabeledSeekBarTest
Change-Id: I7aff859e4fdaed6fe95a5d77564059ef1a7f6ff0