a4dd79f78d
windowShowWallpaper behaves unexpectedly with transitions as of 14 QPR3. As a result, the changes of "Revamp outro animation" were causing the transition into the final page of the wizard to instantaneously have a transparent wallpaper background, even before the animation finished. This was jarring and odd, so now we use a regular theme until we are ready to start our animation, at which point we recreate the activity with the EdgeToEdgeWallpaperBackground (windowShowWallpaper) theme before running the animation. Change-Id: Ib19918d7d2a615aff44a48066b17ec9d2f04bac6