[Unicast] Won't show "active" when changing active from HS to LEHS

if the 'active device' is in the member device list, then the main
device is active and then updating the main device's state.

Bug: 259892289
Test: build pass.
make RunSettingsLibRoboTests -j40 ROBOTEST_FILTER=BluetoothEventManagerTest

Change-Id: I60d7cb40cc29ea12e5d4f12c10d44eda3e2cf4fe