Support text selection and copy/paste on the Dataset File Tree

[kunwp1]

Currently, the Dataset File Tree component does not allow users to select text using the mouse cursor. This prevents the use of standard keyboard shortcuts (e.g., Ctrl+C / Ctrl+V or Cmd+C / Cmd+V) to copy file names or directory paths directly from the UI.

[chenlica]

@jaeyun0503 Are you working a related issue/PR?

[chenlica]

@kunwp1 Check this issue #4384