fix: 超过高度才显示滚动条

src/components/TableColumnsDnd/index.vue

@@ -99,7 +99,7 @@ emit('update:columns-dnd', tableColumnsCheckList);
       <template #content>
         <a-checkbox-group
           v-model:value="state.columnsTitleList"
-          style="width: 100%"
+          style="width: 100%; max-height: 450px; overflow-y: auto;"
         >
           <Container orientation="vertical" @drop="fnTableColumnsDrop">
             <Draggable v-for="c in tableColumns" :key="c.title">