Alias for action_later so Esc resolves to a deliberate defer.
The app's action_interrupt (escape binding, priority=True)
fires before this screen's own escape binding. When the active
screen is a ModalScreen, it dispatches to action_cancel if
present, else falls through to dismiss(None). The current caller
no-ops on both None and "later", but defining this alias pins Esc
to an explicit "later" — matching the sibling reconnect/cwd-switch
modals and keeping the outcome unambiguous for any future caller that
branches on a deliberate defer versus a programmatic dismiss.
