Merge "Rank ChooserTargets using appTarget#rank instead of shortcut#rank. AppTarget#rank contains the score passed from AppPredictionService." into rvc-dev am: 14eea93f57 am: c19bd9220a

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

Change-Id: I19b0d19d72f6fab92137ba504ee4bbcbe0644f5a