Disable read/write to ota.warm_reset in recovery mode am: a22ef552c0 am: c0d5e8eef2 am: 9008cd8180

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/1456078

Change-Id: I0fc6c2238bdb10353fca1788a17c47ac29b5d793