Merge "Create TEST_OWNERS for SystemUI" into main am: 9bdd3f4ee6

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3272137

Change-Id: Ia4a4ae9652fda1913b763e0f37dd0d010f52fdb2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>