Moving some more stuff behind the live tile feature flag

- With live tiles disabled, we are still calling
  LauncherLayoutListener.update with shouldFinish=true, which can cause
  the layout listener to be closed prior to the screenshot being taken
  and shown.  When we enable live tiles, it should obliviate the need to
  switching to screenshot as well.

Bug: 122612839
Change-Id: I5c951ba2a486051016e9fed49e7f8f5dd015f8ea