Disallow use of error-prone merge-strategies am: 86c4c55d81 am: 8f34219d39 am: 4891825878

Original change: https://android-review.googlesource.com/c/platform/packages/modules/SdkExtensions/+/1602053

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ia74a031f21cba54a15d6d7961b7b9e8ba11e1f03