Merge "Fade navbar-handle in/out during TRANSITION_HANDLE_FADE" into tm-qpr-dev am: 2a20958f4b am: 0264036b64

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/22433065

Change-Id: I779cae347ca106349f0567cb1660a7f1165b3e5e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>