Before this change, People Service uses the presence of the Person object in ShortcutInfo as the criteria of conversation shortcut. This changes the criteria that the shortcut needs to be a share shortcut instead of having Person object. Change-Id: I1ea52a50c909ca96365c1d4e55af97931d048d8f Test: atest ShortcutHelperTest Test: atest DataManagerTest Bug: 154254830