fix: add styling to pagination dropdown options (#222)

```release-note
添加底部分页选择的背景颜色。
```

templates/modules/pagination.html

@@ -14,6 +14,7 @@
         th:selected="${i == page}"
         th:value="${i}"
         th:text="|${i} / ${totalPages}|"
+        class="bg-white text-gray-900 dark:bg-slate-700 dark:text-slate-50"
       ></option>
     </select>
     <a