Merge "Avoid crash when no work profile files app is set" into udc-dev am:...

Merge "Avoid crash when no work profile files app is set" into udc-dev am: 2bc270ac am: 15c65363

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22163303



Change-Id: I1af3cabf746541a76f08f7cefd67fcef863935ed
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>