fix(mobile): translation (no /api, experimental features) (#15600)

* initial /api removal

* translations /api

* experimental features

* japanese url update

---------

Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/assets/i18n/zh-CN.json

@@ -336,7 +336,7 @@
   "login_form_back_button_text": "后退",
   "login_form_button_text": "登录",
   "login_form_email_hint": "youremail@email.com",
-  "login_form_endpoint_hint": "http(s)://您的服务器地址:端口/api",
+  "login_form_endpoint_hint": "http://您的服务器地址:端口",
   "login_form_endpoint_url": "服务器链接地址",
   "login_form_err_http": "请注明 http:// 或 https://",
   "login_form_err_invalid_email": "无效的电子邮箱",
@@ -670,4 +670,4 @@
   "viewer_unstack": "取消堆叠",
   "wifi_name": "Wi-Fi 名称",
   "your_wifi_name": "您的 Wi-Fi 名称"
-}
+}