feat(msgcenter): 消息跳转入口改用后端 showJump 判权出参（C1）——铃铛卡片箭头与全部消息「去处理」v-if 由 jumpUrl 切至 showJump，审批按钮不受影响

src/components/Header.vue

@@ -54,7 +54,7 @@
                                                 <a href="javascript:;" class="approval-link reject"
                                                     @click="openApproval(item, 'reject')">拒绝</a>
                                             </span>
-                                            <a v-if="item.jumpUrl" href="javascript:;" @click="onClickMsg(item)"
+                                            <a v-if="item.showJump" href="javascript:;" @click="onClickMsg(item)"
                                                 title="查看详情">
                                                 <SvgIcon name="arrow-right" color="#bbbbbb" />
                                             </a>
@@ -532,7 +532,7 @@ const columns = ref<any[]>([
                     )
                 );
             }
-            if (row.jumpUrl) {
+            if (row.showJump) {
                 if (nodes.length) nodes.push(h("span", " "));
                 nodes.push(
                     h(