Use ShortcutInfo#rank to order Sharing Shortcuts in ShareSheet

Sort based on rank only when directly fetching the targets from
ShortcutManager. Otherwise the target from AppPredictionService are
already ordered.

Bug: 140449186
Test: atest ChooserActivityTest
Test: Manual test to verify shortcuts have the same order in Launcher and ShareSheet when AppPredictionService is disabled

Change-Id: I41e08b86746c977c05acea8a5d0654083897741d