feat(announcement): 为日期选择器添加搜索范围功能

src/views/announcement/index.vue

@@ -107,6 +107,7 @@ export default {
                         format: "yyyy-MM-dd",
                         valueFormat: "yyyy-MM-dd",
                         rangeSeparator: "至",
+                        searchRange: true,
                         startPlaceholder: "开始时间",
                         endPlaceholder: "结束时间",
                         overHidden: true,