Merge "Address a couple small followups for TaskbarInsetsController" into tm-dev am: 357c622572 am: 6bd2704e8b

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/17873349

Change-Id: I21497e60d6cd68d33a9fd481d0b3f56a5d165862
Ignore-AOSP-First: this is an automerge
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>