Merge "Use the right content to estimate the span in WidgetsFullSheet" into sc-v2-dev am: a54535b8f5

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15430778

Change-Id: Ief8c00356ca2e930da4b2e6195e1e74b66ad8aee