Refresh to show/hide hearing device input preference

Root Cause: When hearing device gets disconnected, it still shows hearing device input preference but it is not valid at this moment.

Solution: Show/hide preferece when refresh() get called

Bug: 410731722
Test: atest BluetoothDetailsHearingDeviceInputRoutingControllerTest
Flag: EXEMPT bugfix
Change-Id: I0ba87f427643c1a8ca0e068cfa4a9fd0fa1fe5a0