[RESTRICT AUTOMERGE] UserDataPreparer: reboot to recovery if preparing user storage fails am: 69c3ce70c6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17416248

Change-Id: Icbaf5892b2804757bc831533fbf2adf851f89f2c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>