Add support of custom animation in ActivityEmbeddingController

Because ActivityEmbeddingAnimationRunner will union the bounds of
open changes as the animation parent size (Animation#initialize),
it won't animate on a small region as DefaultTransitionHandler
that uses end bounds.

E.g. one {OPEN,FILL_TASK} TaskFragment and two {CLOSE} TaskFragment.

Bug: 288233059
Test: atest ActivityEmbeddingControllerTests# \
            testShouldAnimate_containsAnimationOptions
Test: With a device that supports activity embedding.
      Below cases can run their specified animation:
      1. Launch Settings->Display->Brightness level
      2. Security->Device unlock->Fingerprint Unlock
         while a secured lock is set and the device only uses
         fingerprintStatusUtils.getSettingsClassName().
Change-Id: Idda515ba483c1c55508dd07450f10f3e9f232e52