Merge "Remove the flag isCarouselInTransition" into udc-dev am: 46319ff05b

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/22908417

Change-Id: I18093903d07211e0ac304cff23c281d8c001d50c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>