Fix cached app icon being used in app list.

- change to use the icon from IconDrawableFactory instead of from app
info when building the application list.

Fixes: 63978676
Test: manual, reinstall an app with updated icon and launch
settings->Apps & notifications->See all apps and check the app icon.

Change-Id: I99028ef97fb4fec8c90708b26caaddb7325c1ddb