function keyupIsHiddenByCmd(keyName) {
  return keyName.length === 1 || hasKey(KeysWithKeyUpHiddenByCmd, keyName);
}
Whether the specified key, when pressed down with the cmd key, never triggers a keyup
event in the browser
@param {NormalizedKeyName} keyName Name of the key
@returns {boolean} Whether the key has its keyup event hidden by cmd