feat: 固定办事处筛选下拉框宽度

src/views/dashboard/workbench/index.vue

@@ -15,6 +15,7 @@
           <a-select
             :options="options"
             placeholder="按办事处筛选"
+            style="width: 126px"
             @select="value => setSelectedKeys([value])"
             allowclear
           />