在已关闭的 issue "关于收藏" 中提到的全选功能仅在下载页面中可用

Please describe the problem in a clear and concise manner. For example, I'm always frustrated when [...] https://GitHub.com/seven332/EhViewer/issues/658 In this issue, the author mentioned "long press, there is a select all, and then move the collection." This method can be used to convert cloud collections to local collections, but when used, only the select all option appears after long pressing on the download interface. In the collection interface, whether it is cloud, local, or favorite, long pressing only has the move collection, delete, and download three options.