Fix Telecom vibrator issue.

1. Protect mIsVibrating with synchronized lock.
2. Improve event log START_VIBRATOR and SKIP_VIBRATOR to represent
   vibration start/skip time more properly.
3. Avoid using deprecated method in Vibrator

Bug: 223459607
Test: atest RingerTest
Change-Id: I3e9820268d1085d3179379f342c031f3860b1a49