Merge "Camera: Release extension resources after closing handler thread" into sc-dev am: aae08711 am: cce3ba79 am: c4a8b6d1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15463697

Change-Id: I0716444c4d5ef0f200eaa304350cb5997f80d463