Add 工作流分割线

src/components/chatSubassembly/workflowItem.vue

@@ -18,6 +18,7 @@
             </el-collapse-item>
         </el-collapse>
     </div>
+    <el-divider style="margin: 8px 0;"/>
 </template>
 <script setup>
 import { computed, watch, ref, nextTick, onMounted } from "vue";