Merge "Add picker sync worker tests" into udc-mainline-prod am: 434f20581a

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/providers/MediaProvider/+/25559684

Change-Id: I5f0f9d14756ba5de3475203d708534cc8732aa68
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>