Add keyguard indication area to glanceable hub

In order to make this work, we need to reset the indication area back to
the lockscreen when the hub is closed - as the view controller is a
singleton and maintains a reference to the active indication area view.
Instead of doing this directly, we simply update the binder to always
revert to the previous state when the view is disposed, which happens
when the view exits composition.

Bug: 340519071
Test: verified on device by opening and closing the hub and verifying
lockscreen indication area is still updated afterwards
Flag: com.android.systemui.communal_hub

Change-Id: Idd98cb5f81a1c985bbec3a9c304ce912fd67122e