Handle service changed indication in HOGP host

HOGP host implementation assumed that the HOGP and related services
would not change in the HOGP device. However this may be true for some
devices.
With this change, HOGP host generates a local disconnection to prevent
interaction with the HOGP device while the GATT rediscovers the services
on the HOGP device. On completing the service re-discovery, HOGP host
pretends to have connected to a new device. However btif_hh remains
under impression that the HOGP device reconnected.

Bug: 220105065
Test: Manual
Change-Id: I29b14d868e4325bd6a296daa795be0343e58dbb9