Merge "Only inflating taskbar views for valid items" into sc-v2-dev am: 58e3a767ec am: 4a6cb13d56

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14968386

Change-Id: I236d5afe53da88928e13dd32b8d1c76867cc16ac