Merge "SelectableTargetInfo "immutability"/other cleanup" into tm-qpr-dev am: 92269439a3 am: ca453c0266

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/IntentResolver/+/20482288

Change-Id: I79653a5c41a832cf393ae10fb3729849a4e9113e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>