Merge "Merge "Camera: Exit PreviewStreamSpacer when disconnecting stream" into...

Merge "Merge "Camera: Exit PreviewStreamSpacer when disconnecting stream" into tm-dev am: c3a3ee83 am: 2aa59434" into tm-d1-dev-plus-aosp am: 4be0ac08

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/18415584



Change-Id: I9c74e96fc93a4bddb29fb7681d33de172b400907
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>