Address API Council feedback.

- Make VibrationEffect.Composition final
- Hide the VibrationEffect.Composition default constructor
- Fix doc and nullability annotation bugs on
  VibrationEffect.Composition#addPrimiritive
- Make Vibrator#areAllEffectsSupported and
  Vibrator#areAllPrimitivesSupported

Fixes: 150958120
Test: build
Change-Id: I0d9a782fd4130639ad99179d7770dcde1a2afba5