Check animation type in ActivityRecord.

ActivityRecord calls WindowContainer#isAnimating at several places
to determine resource related procedures should be delayed.

With hierarchical animation enabled, screen rotation animation and
dimmer animation might affect the result of the predicate unexpectedly.
So restrict animation type only to APP_TRANSITION and WINDOW_ANIMATION.

Bug: 152333373
Bug: 149837574

Test: Manual. Show the emergency dialer, push home button, and shows the
emergency dialer again, then verify no black screen or flicker.

Change-Id: Ia5fb1718a1ddce24991a16a807df92933e93fc1b