Fix taskbar 3-button truncation on rotate am: c0b30dc266 am: b3513063b5

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/17109868

Change-Id: I2ffb6f71386b8600ba995aebb0d1b92bafc1eebb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>