Merge "Widgets: Only reset expanded item & scroll to top if the user switch tab" into sc-dev am: f357dc4f3e

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14622871

Change-Id: I4ae28cd0bbc1e84268f4d6c9c1d047d39e582ae1