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

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

Change-Id: Idf78f029f4865947a0a88d9825d52cae947e4fac
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>