message: chore(locale-modal): warn missing links for alternate language
  Adds a logic to emit a console warning when `<link rel="alternate">`
  for alternate language is missing, that yeilds to an empty result in
  `<dds-locale-search>`.
  Refs
diff: @@ -189,6 +189,13 @@ class DDSLocaleModalComposite extends HybridRenderMixin(LitElement) {
  const { localeModal: localeModalI18N, regionList } = localeList ?? {};
  const { searchPlaceholder } = localeModalI18N ?? {};
  const pageLangs: { [locale: string]: string } = altlangs();
  + if (Object.keys(pageLangs).length === 0 && (regionList?.length as number) > 0) {
  + const messages = [
  + 'Detected that `<link rel="alternate">` is likely missing.',
  + 'The locale search UI will yeild to an empty result.',
  + ];
  + console.warn(messages.join(' ')); // eslint-disable-line no-console
  + }
  const massagedCountryList = regionList?.reduce((acc, { countryList, name: region }) => {
  this._sortCountries(countryList).forEach(({ name: country, locale: localeItems }) => {
  localeItems.forEach(([locale, language]) => {
  