Workaround for delayed reset-transform transaction

- Attempt to mask an issue with the menu window resizing before the
  reset transform is applied by delaying the start of the menu
  animation after the pip expands and extending the duration of
  the animation.

Bug: 160826797
Test: Expand pip repeatedly
Change-Id: I1f8d524f2221b8bfb18a918b192b3e1c20dd6030