chore(resx): regenerate ResUI.Designer with TUN string accessors

- Add strongly-typed accessors in ServiceLib.Resx.ResUI:
  - TbSettingsTunAutoRoute → "Auto Route"
  - TbSettingsTunStrictRoute → "Strict Route"
  - TbSettingsTunStack → "Stack"
  - TbSettingsTunMtu → "MTU"
- Keep auto-generated structure intact; normalize minor whitespace.

Refs: v2rayN/ServiceLib/Resx/ResUI.resx
No functional changes beyond exposing new i18n keys.

v2rayN/ServiceLib/Resx/ResUI.Designer.cs

@@ -3732,6 +3732,34 @@ namespace ServiceLib.Resx {
             }
         }
 
+        /// <summary>
+        ///   查找类似 Auto Route 的本地化字符串。
+        /// </summary>
+        public static string TbSettingsTunAutoRoute {
+            get { return ResourceManager.GetString("TbSettingsTunAutoRoute", resourceCulture); }
+        }
+
+        /// <summary>
+        ///   查找类似 Strict Route 的本地化字符串。
+        /// </summary>
+        public static string TbSettingsTunStrictRoute {
+            get { return ResourceManager.GetString("TbSettingsTunStrictRoute", resourceCulture); }
+        }
+
+        /// <summary>
+        ///   查找类似 Stack 的本地化字符串。
+        /// </summary>
+        public static string TbSettingsTunStack {
+            get { return ResourceManager.GetString("TbSettingsTunStack", resourceCulture); }
+        }
+
+        /// <summary>
+        ///   查找类似 MTU 的本地化字符串。
+        /// </summary>
+        public static string TbSettingsTunMtu {
+            get { return ResourceManager.GetString("TbSettingsTunMtu", resourceCulture); }
+        }
+
         /// <summary>
         ///   查找类似 Tun Mode settings 的本地化字符串。
         /// </summary>