[Bug]: Automatically delete empty folders

[alongflow]

What happened?

空文件夹同步仍然会自动删除。

创建空文件夹后第一次点击同步不会删除，但是再次点击同步仍然会删除空文件夹.

What OS are you using?

Windows

What remote cloud services are you using? (Please choose the specified one if it's in the list)

S3 (腾讯云 COS Tencent Cloud COS)

Version of the plugin

0.5.24

Version of Obsidian

1.6.7

Using password or not

• [ ] Yes.

Ensure no sensitive information

• [X] I ensure that no sensitive information is submitted in the issue.

[fyears]

你好，由于s3云端没有存储空文件夹信息，所以会出现这种情况。

唯一解决方法是塞一个文件进入文件夹里。