Merge "libsnapshot: Verify the ordering of COW operations." into main am: 1db90d0aac am: 5eb2c1e898 am: 94a62bb477

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2668076

Change-Id: Ibfe168c4104d804f066fc4affc6224782896280e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>