[automerger skipped] DO NOT MERGE Reset top focused root task when task hidden am: 78a9f28282 am: c66450629e -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14019845

Change-Id: I6e5eadc5ac752f839998f394646b82c74b242e13