修正在不是游客模式下，登录注册界面无法输入问题。为注册页面的所有输入框添加独立的 FocusNode,并确保正确的焦点切换

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

@@ -1034,6 +1034,7 @@ class KRLoginView extends GetView<KRLoginController> {
           SizedBox(width: 8.w),
           Expanded(
             child: TextField(
+              focusNode: controller.kr_inviteCodeFocusNode,
               controller: controller.inviteCodeController,
               decoration: InputDecoration(
                 hintText: AppTranslations.kr_login.enterInviteCode,
@@ -1253,6 +1254,7 @@ class KRLoginView extends GetView<KRLoginController> {
           SizedBox(width: 8.w),
           Expanded(
             child: TextField(
+              focusNode: controller.kr_accountFocusNode,
               controller: controller.accountController,
               keyboardType: TextInputType.emailAddress,
               decoration: InputDecoration(
@@ -1340,6 +1342,7 @@ class KRLoginView extends GetView<KRLoginController> {
             SizedBox(width: 8.w),
             Expanded(
               child: TextField(
+                focusNode: controller.kr_codeFocusNode,
                 controller: controller.codeController,
                 keyboardType: TextInputType.number,
                 decoration: InputDecoration(
@@ -1393,6 +1396,7 @@ class KRLoginView extends GetView<KRLoginController> {
           SizedBox(width: 8.w),
           Expanded(
             child: Obx(() => TextField(
+              focusNode: controller.kr_passwordFocusNode,
               controller: controller.psdController,
               obscureText: controller.kr_obscureText.value,
               keyboardType: TextInputType.text,
@@ -1450,6 +1454,7 @@ class KRLoginView extends GetView<KRLoginController> {
           SizedBox(width: 8.w),
           Expanded(
             child: Obx(() => TextField(
+              focusNode: controller.kr_confirmPasswordFocusNode,
               controller: controller.agPsdController,
               obscureText: controller.kr_obscureText.value,
               keyboardType: TextInputType.text,