Pad bottom of settings list view with bottom system insets am: ed49a7187d am: 24cee4fbac am: 8e40916b5f

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14738959

Change-Id: Ib2f1f4b8442eb7c081de243500a9defafe168ede