Merge "Update size limits to match spec." into sc-dev am: adeb26b0dc am: d050a354a8

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15338351

Change-Id: Ibc2683a63a67cba3a3b84a81f7c2e5edf3afead1