message: Rename `Focus::at` to `Focus::updated_at` in `text_input`
diff: @@ -432,7 +432,10 @@ where
  state.is_focused.or_else(|| {
  let now = Instant::now();
  - Some(Focus { at: now, now })
  + Some(Focus {
  + updated_at: now,
  + now,
  + })
  })
  } else {
  None
  @@ -564,7 +567,7 @@ where
  let message = (on_change)(editor.contents());
  shell.publish(message);
  - focus.at = Instant::now();
  + focus.updated_at = Instant::now();
  return event::Status::Captured;
  }
  @@ -575,7 +578,7 @@ where
  if let Some(focus) = &mut state.is_focused {
  let modifiers = state.keyboard_modifiers;
  - focus.at = Instant::now();
  + focus.updated_at = Instant::now();
  match key_code {
  keyboard::KeyCode::Enter
  @@ -787,7 +790,7 @@ where
  focus.now = now;
  let millis_until_redraw = CURSOR_BLINK_INTERVAL_MILLIS
  - - (now - focus.at).as_millis()
  + - (now - focus.updated_at).as_millis()
  % CURSOR_BLINK_INTERVAL_MILLIS;
  shell.request_redraw(
  @@ -863,7 +866,8 @@ pub fn draw<Renderer>(
  font.clone(),
  );
  - let is_cursor_visible = ((focus.now - focus.at).as_millis()
  + let is_cursor_visible = ((focus.now - focus.updated_at)
  + .as_millis()
  / CURSOR_BLINK_INTERVAL_MILLIS)
  % 2
  == 0;
  @@ -1007,7 +1011,7 @@ pub struct State {
  #[derive(Debug, Clone, Copy)]
  struct Focus {
  - at: Instant,
  + updated_at: Instant,
  now: Instant,
  }
  @@ -1043,7 +1047,10 @@ impl State {
  pub fn focus(&mut self) {
  let now = Instant::now();
  - self.is_focused = Some(Focus { at: now, now });
  + self.is_focused = Some(Focus {
  + updated_at: now,
  + now,
  + });
  self.move_cursor_to_end();
  }
  