Fix Assistant breaks after stopping the app.

Android 13 introduces a feature that allows users to kill foreground
services that will break the home screen mic function. The root cause
is because we don't handle the binding die case. Ideally we should
migrate the force stop, package update cases to onBindingDied but we
would like to minimize the risk before release. From the fgs task
manager description, we can check new REASON_USER_REQUESTED reason on
ApplicationExitInfo, we only handle this case to rebind the service
to minimize the scope.

Bug: 225166047
Test: atest CtsVoiceInteractionTestCases
Test: manual. The function still works after adb shell cmd activity
stop-app com.google.android.googlequicksearchbox

Change-Id: Ia8395fc6f7b6df36b158f0578d57d948748a43b3