Merge "Revert "Only update default home when the preferred home activity is modified."" into sc-dev am: 7e7c76c8a8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14477457

Change-Id: I4b93b3b5bb38ab2da430884d4c21800fbe64175b