fullscreen-shell: update for manual surface/view mapping

This is a follow up for fullscreen-shell to manually
set mapped status for views/surfaces it controls

v2:

- Add manual mapping to fs_output_apply_pending()

Signed-off-by: Armin Krezović <krezovic.armin@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
1 file changed