Merge "Fix register homeTransitionListener with empty Transitions" into main am: e40166458d

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3105357

Change-Id: I287ed7dd1904a2fa6e4af33e0c3545d86c35dfd5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>