Merge "Toggle taskbar button nav assistant availability" into tm-qpr-dev am:...

Merge "Toggle taskbar button nav assistant availability" into tm-qpr-dev am: daffdfa3 am: 1e4e91b2

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/20858639



Change-Id: Ib564b8b8a77765e8e8657ed7bbdaae7d14176f82
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>