Merge "Only recreate taskbar for uiMode theme changes" into tm-qpr-dev am: a8b120bc7e am: 921db64ba1

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/21654877

Change-Id: I7abf3d5a2db3ed58ceca23f0f600f25b2f015807
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>