Merge "Update ArrowPopup to accommodate more rounded dialogs." into sc-dev am: 3be39aa0b9

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/13692450

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: If133ed3888da8ee05ff62a9b7b313beae23fa3eb