Convert ShortcutLoader to Kotlin am: afe103dfcb am: 8c17ff02bb

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/IntentResolver/+/20615573

Change-Id: I5b65aae982c612554bfe26d9ae9446962d701499
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>