feat: add locales for user search in promo offer sending

- Add searchUserPlaceholder, noUsersFound, hasSubscription keys
- Support all 4 languages: en, ru, zh, fa
- Remove fallback strings from component

src/locales/en.json

@@ -1817,6 +1817,9 @@
         "segment": "Segment",
         "user": "User",
         "userIdPlaceholder": "Telegram ID or User ID",
+        "searchUserPlaceholder": "Search by name, username or Telegram ID...",
+        "noUsersFound": "No users found",
+        "hasSubscription": "Sub",
         "preview": "Preview",
         "sending": "Sending...",
         "sendButton": "Send"

src/locales/fa.json

@@ -1610,6 +1610,9 @@
         "segment": "بخش",
         "user": "کاربر",
         "userIdPlaceholder": "شناسه تلگرام یا شناسه کاربر",
+        "searchUserPlaceholder": "جستجو بر اساس نام، نام کاربری یا شناسه تلگرام...",
+        "noUsersFound": "کاربری یافت نشد",
+        "hasSubscription": "اشتراک",
         "preview": "پیش‌نمایش",
         "sending": "در حال ارسال...",
         "sendButton": "ارسال"

src/locales/ru.json

@@ -2328,6 +2328,9 @@
         "segment": "Сегмент",
         "user": "Пользователь",
         "userIdPlaceholder": "Telegram ID или User ID",
+        "searchUserPlaceholder": "Поиск по имени, username или Telegram ID...",
+        "noUsersFound": "Пользователи не найдены",
+        "hasSubscription": "Подп",
         "preview": "Предпросмотр",
         "sending": "Отправка...",
         "sendButton": "Отправить"

src/locales/zh.json

@@ -1609,6 +1609,9 @@
         "segment": "分组",
         "user": "用户",
         "userIdPlaceholder": "Telegram ID 或 User ID",
+        "searchUserPlaceholder": "按姓名、用户名或Telegram ID搜索...",
+        "noUsersFound": "未找到用户",
+        "hasSubscription": "订阅",
         "preview": "预览",
         "sending": "发送中...",
         "sendButton": "发送"