Register the remote animation before starting an intent.

This CL calls
IActivityTaskManager#registerRemoteAnimationForNextActivityStart before
starting an intent for which the launch should be animated. This allows
to also animate trampoline launches.

This CL also adds a bit of logging to ActivityLaunchAnimator.

Bug: 184726377
Test: Manual
Change-Id: I4a3b95ed5e93e870d6ae0989d9c1ec771c9e85fc