message: Fix a misnamed variable in the keys port input handler
diff: _handleKeysPortInputKeyUp: function(e) {
  let input = this.$.keysPortInput;
  const badInputMessage = this.localize('error-keys-port-bad-input');
  - if (event.key === 'Escape') {
  + if (e.key === 'Escape') {
  this.cancelKeysPortEdit();
  input.blur();
  return;
  - } else if (event.key === 'Enter') {
  + } else if (e.key === 'Enter') {
  if (!input.invalid) {
  this.saveKeysPort();
  input.blur();
  