Prevent exfiltration of system files via avatar picker. am: f70e351d1a

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/19745058

Change-Id: If9321bf1035c0492396adf4ce3b6579dfe31c66b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>