Apply only RING_VIBRATION_INTENSITY to ringtone vibrations

Ignore the VIBRATE_WHEN_RINGING deprecated settings for ring vibrations.
Old behavior applied this settings only to ringer-mode normal, but never
to vibrate-only ringer mode.

This is being deprecated in favor of the INTENSITY_OFF value in
RING_VIBRATION_INTENSITY.

Fix: 222697191
Test: VibrationSettingsTest
Change-Id: I73db705557b3b545c06c2afb90d056a4274ed820