Replace '<3' with '❤️' in translations
Replace ASCII heart "<3" with Unicode heart emoji "❤️" in logout strings across translation files to improve visual consistency and rendering. Updated files in internal/web/translation for: ar-EG, en-US, es-ES, fa-IR, id-ID, ja-JP, pt-BR, ru-RU, tr-TR, uk-UA, vi-VN, zh-CN, and zh-TW.