Merge "Init nav mode in TaskbarActivityContext between fold/unfold" into udc-qpr-dev am: b038bac666 am: 5eae18306c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/24493282

Change-Id: I405d3817876db08d3c6156cae9b342c9e5456683
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>