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

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

Change-Id: I21cbb326b67be7f63285ee296204ac1182afba97
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>