Always show CHANGE containers in transition setup

This shouldn't be necessary, but it acts as a failsafe in case
a previous transition messes-up visibility in its finishTransaction.

Bug: 280737703
Test: launch app, swipe-to-home, relaunch the app before home animation
      finishes.
Change-Id: Ic7a81e313b35310061c9278ea72c98cc0bf20ef7