feat: use t-qrcode component with default value "tdesign"

Co-authored-by: liweijie0812 <10710889+liweijie0812@users.noreply.github.com>

Author: Copilot

src/pages/login/components/Login.vue

@@ -46,7 +46,7 @@
         <span class="tip">{{ t('pages.login.wechatLogin') }}</span>
         <span class="refresh">{{ t('pages.login.refresh') }} <t-icon name="refresh" /> </span>
       </div>
-      <q-r-code-component value="" :size="160" level="H" />
+      <t-qrcode value="tdesign" :size="160" level="H" />
     </template>
 
     <!-- 手机号登录 -->
@@ -83,7 +83,6 @@
 <script setup lang="ts">
 import type { FormInstanceFunctions, FormRule, SubmitContext } from 'tdesign-vue-next';
 import { MessagePlugin } from 'tdesign-vue-next';
-import { QRCode } from 'tdesign-vue-next/es/qrcode';
 import { ref } from 'vue';
 import { useRoute, useRouter } from 'vue-router';
 
@@ -93,9 +92,6 @@ import { useUserStore } from '@/store';
 
 const userStore = useUserStore();
 
-// Define the QRCode component for use in template
-const QRCodeComponent = QRCode;
-
 const INITIAL_DATA = {
   phone: '',
   account: 'admin',