Add context in AudioManager.hasHapticChannels.

A context will be required for resolving a Uri. Using the context in
AudioService may not always work and it may cause not oneway binder call
issue. In that case, using the context in RingtoneManager could help.
In AudioManager, caching a static context so that it can be used when
there is not context provided.

Test: atest RingtoneManagerTest
Bug: 187842281
Change-Id: Ia2f514cb8f821926cf3d353cf912a44aeb584ab6