Merge "ultrahdr: signal all threads that no further jobs will be queued" into...

Merge "ultrahdr: signal all threads that no further jobs will be queued" into udc-dev am: 15ed5da8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/23114816



Change-Id: I1a3f39797fec74ce38e42e3cb30b3266d89043d8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>