Hide screenshot UI in setup wizard.

Full screenshot UI would expose edit/share actions that are not
appropriate for SUW. ThiS CL removes all the UI in this situation and
just does a haptic with a toast indicating that the screenshot has been
taken.

Bug: 151797808
Test: - Verify behavior unchanged w/ normal screenshots.
      - Verify that tooltip UI is used during setup wizard.
      - Verify that screenshots taken during SUW are saved.
Change-Id: Id9791265088e34f067cea68fd1eaba597e3c97b0