Some users forgot they had paired devices and couldn't see their BT device when they search device in "Pair new device". (b/80382940, b/80133137). Need to change the behavior to let paired devices can be shown on "Available devices". Bug: 111738593 Test: Bluetooth Pairing Test Change-Id: Ib499785abaa8e4efc1875be113ac87bdbe0c89ba