56b79f12ac
Closes #29750. Reporter flagged that 繁體中文 displayed the TW flag instead of the PRC flag. Rather than picking a side, drop the language-flag pairings entirely — languages aren't countries (English ≠ GB, Portuguese ≠ PT, Mandarin variants ≠ any single jurisdiction), and endonyms are unambiguous. - LOCALE_META: strip flagCountryCode field - LanguageSwitcher: remove LocaleFlagIcon component + both call sites - main.tsx: drop flag-icons CSS import - package.json: uninstall flag-icons