A2DP: Advance btif profile queue on OPENING->other_state transition

* Entering BTIF_AV_STATE_OPENING is only possible through
  BTIF_AV_CONNECT_REQ_EVT (initiated by us) OR
  BTA_AV_PENDING_EVT (initiated by remote)
  from BTIF_AV_STATE_IDLE
* If we go from BTIF_AV_CONNECT_REQ_EVT, we must have a pending
  connection request in btif_profile_queue that should be advanced when
  we quit BTIF_AV_STATE_OPENING state
* This CL adds a flag to indicate whether an AV connection is initiated
  by us and only advance queue when it is
* Also add queue advancement in BTA_AV_REJECT_EVT and BTA_AV_CLOSE_EVT

Bug: 67317954
Test: make
Change-Id: I16dc8ebf76c6edaacb1f7a4a44e604170ff9a8b0