refactor(login): 优化登录页面 MFA 验证逻辑

- 调整 MFA 验证码加载状态管理，提升用户体验
- 移除多余的 catch 块，简化代码结构- 在 mfaConfig 组件中：
  - 优化二维码显示样式，移除不必要的 fit 属性  - 修正 el-input 组件的 v-model 绑定方式

src/views/login/index.vue

@@ -282,10 +282,11 @@ export default {
       this.$store.dispatch('user/verifyMfaCode', this.loginForm).then(() => {
         this.$store.dispatch('user/setMenuList').then(() => {
           this.$router.push({ path: this.redirect || '/' })
-          this.verifyMfaCodeLoading = false
-        }).catch(() => {
+        }).finally(() => {
           this.verifyMfaCodeLoading = false
         })
+      }).catch(() => {
+        this.verifyMfaCodeLoading = false
       })
     },
     validUsername() {

src/views/setting/cloudSetting/mfaConfig.vue

@@ -25,8 +25,7 @@
           <template slot="description">
             <div class="description-container">
               <div class="step-instruction">使用手机应用扫描以下二维码，获取 6 位验证码。</div>
-              <el-image style="width: 150px; height: 150px" :src="mfaSetupResponse.qrCodeImageUri" :fit="cover"
-                        alt="二维码" />
+              <el-image style="width: 150px; height: 150px" :src="mfaSetupResponse.qrCodeImageUri" alt="二维码" />
               <div class="step-instruction">密钥 ：{{ mfaSetupResponse.secret }}
                 <svg-icon
                   class="copy-btn"
@@ -43,7 +42,7 @@
             <div class="description-container">
               <div class="step-instruction">请输入身份验证器 App 生成的 6 位动态验证码，开启两步验证。</div>
               <div class="step-instruction enable-mfa">
-                <el-input placeholder="6位动态验证码" size="small" class="code-input" v-model:value="enableMfaCode"></el-input>
+                <el-input placeholder="6位动态验证码" size="small" class="code-input" v-model="enableMfaCode"></el-input>
                 <el-button size="small" type="primary" round :disabled="enableMfaCode.length !== 6" @click="enableMFA">开启 2FA</el-button>
               </div>
             </div>
@@ -52,7 +51,7 @@
       </el-steps>
       <div v-if="mfaSetupResponse.mfaEnable">
         <div class="step-instruction enable-mfa">
-          <el-input placeholder="6位动态验证码" size="small" class="code-input" v-model:value="disableMfaCode"></el-input>
+          <el-input placeholder="6位动态验证码" size="small" class="code-input" v-model="disableMfaCode"></el-input>
           <el-button size="small" type="warning" round :disabled="disableMfaCode.length !== 6" @click="disableMFA">禁用 2FA</el-button>
         </div>
       </div>