If a window was moved by the user, it got effectively blacklisted from being
ever restored again. Instead of only tracking the last restore point, compare the
current window state with the state it had when the output configuration was last
seen. If either that or the last restore point match the window, restore the old
window state.
The Window::moveResizeOutput() property is used to track the output
where the window is expected to land after the move or resize operation
completes.
This can be used to decouple the current output from the next output,
which allows us to send better xdg_toplevel.configure_bounds events or
make windows stick to outputs while keeping Window::output() in sync
with the current output layout.
