Merge "[Search][Motion] Separate AllApps scrim and content interpolation" into sc-dev am: a7fc3ee4c7

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14289068

Change-Id: I8af8bbd1f0d934c5b9b15c0e4a792d6d7d4f4e8f