Fix kotlin nullable errors in IntentResolver am: 097c269627 am: 3aef0f4c8c am: 816f47e2c6

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

Change-Id: I8013829be744732d016b87ca57e92ca163a2cbcb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>