Merge "Fix bug where scrim did not fade in during staggered workspace...

Merge "Fix bug where scrim did not fade in during staggered workspace animation." into ub-launcher3-rvc-dev am: fd4e7a89

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/11800441

Change-Id: I61b4bb31d9f87631f909f4e9ed02e99fdf0c61db