Merge "Check test assumption before starting test activity" into stage-aosp-sc-ts-dev am: a2b4da330f am: 1a22a54c7f

Original change: https://googleplex-android-review.googlesource.com/c/platform/cts/+/15686049

Change-Id: I474fdafbbd1ab9bcf54da95837958217af119f0b