Merge "Top row of first workspace screen occupied only when QSB is placed at the top." into tm-dev am: 763fd21b34

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/17155007

Change-Id: I11b05218a455b80e2fd1b29398f8540229a7675f