Connected devices page did not show correct summary when member device connect

Root Cause: CsipDeviceManager only refreshes UI when switching member device content.

Solution:
* CsipDeviceManager needs to call refresh() on main device when it's new
  member device added.
* UI widget Settings/BluetoothDevice also need to monitor it's member device status to refresh UI.

Bug: 344947362
Test: atest BluetoothDevicePreferenceTest
Flag: EXEMPT bugfix
Change-Id: I58f9e2fc209d4e87631784d0538b1647228f4c1a