fix(portal):修复AI案例点击事件缺失问题- 在AI案例卡片上添加@click事件处理

- 确保点击功能正常触发getAICase方法
- 移除重复的点击绑定以避免冲突

src/views/portal/case/Index.vue

@@ -310,7 +310,7 @@
       <div class="xcontent2-minor">
 
         <div id="fixd-box">
-          <div class="AI-case" style="position: relative" v-if="showAiCase ">
+          <div class="AI-case" style="position: relative" v-if="showAiCase "  @click="getAICase">
             <img src="../../../../public/images/case-logo.png" alt="">
             <span @click="getAICase" style="position: absolute; top: 65px;left: 15px;z-index: 1;width: 40%;height: 30px;"></span>
           </div>