Fix plain VAB OTA failure am: 0a6ac9f16c am: f460853bf6

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/2506304

Change-Id: Ib10956452b90515f24c006d57762e21c261b149b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>