Bluetooth: Fix paired state updates during general bonding failures

Adding Android paired state updates based on "Connected: false" property
updates seen during bonding.  General bonding failures (e.g., due to a
lost ACL link) are not explicitly signaled by bluetoothd and need to be
inferred from the "Connected: false" property update.

Change-Id: Id6ead8cc32befc6b8db4beed61e832b8d5f14c1b
CRs-fixed: 230226