Fix #3864 游戏内容下载的分页按钮不重置 (#3866)

* Fix #3864

* Update DownloadListPage.java

* Update DownloadListPage.java

---------

Co-authored-by: Glavo <zjx001202@gmail.com>

Author: Wulian233

HMCL/src/main/java/org/jackhuang/hmcl/ui/versions/DownloadListPage.java

@@ -453,6 +453,10 @@ protected ModDownloadListPageSkin(DownloadListPage control) {
                         changeButton.value.run();
                     });
 
+                    FXUtils.onChange(control.pageOffset, pageOffsetN -> {
+                        changeButton.value.run();
+                    });
+
                     Pane placeholder = new Pane();
                     HBox.setHgrow(placeholder, Priority.SOMETIMES);