feat(login): 添加设备型号采集并修正参数传递

- 新增_deviceModel变量用于存储设备型号信息
- 在Android平台获取androidInfo.model赋值_deviceModel
- 在iOS平台获取utsname.machine赋值_deviceModel
- 修正请求参数中phonemodel由_countryCode改为_deviceModel
- 添加相关日志输出设备型号信息便于调试

lib/modules/login/controllers/login_controller.dart

@@ -33,6 +33,7 @@ class LoginController extends GetxController {
   bool get isGuestLoginVisible => _isGuestLoginVisible.value;
 
   String _deviceId = '';
+  String _deviceModel = '';
   String _appVersion = ''; // APP版本号
   String _countryCode = ''; // 国家代码
   String _languageCode = ''; // 语言代码
@@ -171,12 +172,14 @@ class LoginController extends GetxController {
       if (GetPlatform.isAndroid) {
         AndroidDeviceInfo androidInfo = await deviceInfo.androidInfo;
         _deviceId = androidInfo.id;
+        _deviceModel = androidInfo.model;
       } else if (GetPlatform.isIOS) {
         IosDeviceInfo iosInfo = await deviceInfo.iosInfo;
         //print('lxm---iosInfo: $iosInfo.toString()');
         final utsname = iosInfo.utsname; // 包含更详细的设备信息
         //print('lxm---utsname: $utsname');
         final machineId = utsname.machine.toLowerCase(); // 例如: "iPhone14,2"
+        _deviceModel = machineId;
         Logger().d('lxm---machineId: $machineId');
         final systemVersion = utsname.release; // 例如: "16.4.1"
         Logger().d('lxm---systemVersion: $systemVersion');
@@ -650,6 +653,7 @@ class LoginController extends GetxController {
   Future<void> requestLogin(Map params) async {
     try {
       Logger().d("请求后台数据login=$params");
+      Logger().d('lxm---phonemodel: $_deviceModel');
       // 在Api.login调用时添加超时
       var response = await Api.login({
         "mail": params["mail"],
@@ -657,7 +661,7 @@ class LoginController extends GetxController {
         "stype": params["stype"],
         "vcode": params["vcode"],
         "ttoken": params["ttoken"],
-        "phonemodel": _countryCode,
+        "phonemodel": _deviceModel,
         "phonemac": params["phonemac"],
         "name": params["name"],
         "avatar": params["avatar"],