Set values set on browser before calling event listeners.

def on_event_pre(self, e: Event) -> None:
        """Set values set on browser before calling event listeners."""
        super().on_event_pre(e)
        ct_msg = e.init.get('currentTarget', dict())
        if e.type in ('input', 'change'):
            # Update user inputs
            self._set_text_content(ct_msg.get('value') or '')