Enhancement: File Loading Lag

[ydong08]

It takes more time to load and display a file by clicking on it.
Anticipate a reduction in load lag.

[Haiquan-27]

The file tree on the panel view is actually a list of files obtained from the remote host at the current time.
The action of clicking on a file is not just a local IO operation, it requires a network request(sftp) to keep the content of the local file synchronized with the file on the remote host
Its design is that it only when a file is selected will it start downloading and display in the view.
If you want a latency free experience, you can first perform a Clone Folder operation on the top-level directory and set file_reload to auto