Merge "Add a scrim underneath the top section of search & recommendation UI" into sc-dev am: c47d8a027d am: 1f2a9b26e1

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14549882

Change-Id: Ide25128be205a0a2552e3d1d66fa27c3dc878c9b