Disconnect pending player when turn bluetooth off

Pending player connection status not handled when Bluetooth on/off
in a short time(<1 second). Disconnect pending player to prevent
ServiceConnectionLeadked when bluetooth turn off.

Bug: 123666648
Test: Manual bluetooth on/off test
Change-Id: Id7cb7295c67a6f138d0826c17c50db5ecdda4b17
2 files changed