bug#46913: dired-do-compress doesn't work on files in inserted subdirectories

[Okam]

Hello,

If I insert a sub-directory into the current Dired buffer using
`dired-maybe-insert-subdir`, I am able to mark files in this
sub-directory and the current directory.

If I try to compress these marked files using `dired-do-compress`, such
as into a Zip file, only the files in the current directory, and not any
in the sub-directory, will be entered into the archive.

Thank you.