Bluetooth: Update notification while BT is turning OFF

Change will update notification while BT is turning OFF. Otherwise,
when BT is turning OFF if Update notification thread is missed
inbound/outbound file transfer status, notification will not properly
updated.

CRs-Fixed: 550485
Change-Id: I0752bcddcf218726c8564d26da7bc7c86a0005fd
(cherry picked from commit 75c26f304d79712f9346e2a1d4dcb694f852a7ea)
(cherry picked from commit a6c8f1867c02d0daeabd7c122ffa4ece45a5d748)
(cherry picked from commit 1477bde1f1306852870fc02258503722dca945a1)