Fix kotlin nullable errors in IntentResolver am: 097c269627 am: 3aef0f4c8c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/IntentResolver/+/24501505

Change-Id: Ie31896bd623ef456fbf4492b9fca7dbe7ae137b9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>