[RESTRICT AUTOMERGE] Ignore errors preparing user storage for existing users am: e03e987337

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17416250

Change-Id: I9f47d7a36a6d3d6c1ba5b82d17f21c15dd9f7235
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>