[automerge] Skip restore of read-only directories 2p: 98f8122702

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16658748

Bug: 194894879
Change-Id: Ic6a9d965d8981451fd819ffa0bf62a3e663e508e
Merged-In: I644a5784fb42352ba28ac944d3aa3564b0215a78