feat: 修复分享文案和null处理

lib/app/modules/kr_login/controllers/kr_login_controller.dart

@@ -400,6 +400,7 @@ class KRLoginController extends GetxController
                 preventBackDismiss: true,
                 confirmText: '确定',
               );
+              return;
             },
             (r) async {
           _saveLoginData(r);

lib/app/modules/kr_login/views/kr_login_view.dart

@@ -89,7 +89,7 @@ class KRLoginView extends GetView<KRLoginController> {
                 final account = KRAppRunData.getInstance().kr_account.value;
                 final isDeviceLogin =
                     account != null && account.startsWith('9000');
-                final accountText = isDeviceLogin
+                final accountText = (account ==null ||  isDeviceLogin)
                     ? '待绑定'
                     : '${KRAppRunData.getInstance().kr_account.value.toString()}';