Pad bottom of settings list view with bottom system insets am: ed49a7187d am: fc96a7d41e am: bd9f4db7de

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

Change-Id: If1bdbe48e6af2b033904f34a1bc93517d7889c59