Merge "Don't update volume if volume level is same as current device volume."...

Merge "Don't update volume if volume level is same as current device volume." am: c8ec673f am: c141108b am: b9a91c8f

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Bluetooth/+/1168010

Change-Id: I3879dc96167bfececb508767dfe87d9201d0e2ac