function resolveUnaltedAlias(keyName) {
  return UnaltedKeysDictionary[keyName] || [ keyName ];
}
Returns the name of the key that must be pressed with the alt key, to yield the
specified symbol
@param {ReactKeyName} keyName Name of the key
@returns {ReactKeyName[]} Name of the key that must be pressed with the alt key, to
         yield the specified symbol