Merge "Refactor and fix flaky tests in WindowOnBackInvokedDispatcherTest" into udc-dev am: f4f331d65a am: ba85d52709 am: 692a86e309

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23352458

Change-Id: I8e2a5529bca189bd14ac7517b1f74f19085eab4c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>