Merge "Rank ChooserTargets using appTarget#rank instead of shortcut#rank. AppTarget#rank contains the score passed from AppPredictionService." into rvc-dev am: 14eea93f57

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11997576

Change-Id: If1aeeb470349b04ee7e1af954b94c323e66eb381