fix：修改指挥部大屏跳转过来时缺失返回主菜单按钮

src/views/projectAdmin/projectIndex.vue

@@ -356,6 +356,7 @@ export default {
                 item.menuList.map((item2) => {
                   if (item2.path == path) {
                     this.$store.commit("setMenuList", item.menuList);
+                    this.$store.commit("setIsShowBackIndex", true);
                   }
                 });
               });