Image wallpaper is scaled to the cutout area when enable hide display cutout

Image wallpaper has a scale animation when entering launcher which make
the wallpaper scale to the cutout area.

Set window crop to prevent this

Bug: 174210114
Test: manual
      1. set image wallpaper
      2. enable hide display cutout
      3. back to launcher
Change-Id: Ie2edc5974dcf6efc9554d70732af46f650888fd4