A2dpSink stopFluorideStreaming

prevent startFluorideStreaming from being enabled when
Bluetooth disconnect and reconnect

Bug: 65416395
Test: 1 connect bluetooth, play music on car kit, disconnect
      and reconnect bluethooh from phone, tap play on phone.
      2 connect bluetooth, play music on car kit, disconnect
      and reconnect bluethooh from car kit, tap play on phone.

Change-Id: Iab2d9ec910e07e9580769ed7a38f798fdf87c2b5
(cherry picked from commit 32c4d0721c51c498519559a9f435389ef7ed822f)