Refactor Persian (fa.json): Convert formal words to casual, user-friendly and natural Iranian Persian

[PicoBaz]

Persian (fa.json) localization improvement

• Converted all formal/bookish Persian text to natural, casual, and user-friendly Iranian Persian
• Replaced heavy and bureaucratic words with everyday, friendly alternatives (e.g. “بلیط” → “تیکت”, “نظر” → “کامنت”, “صرفه‌جویی” → “ذخیره”, “لغو کنید” → “لغو”, etc.)
• Made the overall tone much warmer, friendlier, and closer to how Iranians actually speak in chats and apps
• No translation keys were changed – only the Persian strings were updated

Result: A way more pleasant and familiar experience for Persian-speaking users! 🚀