bug#74674: 30.0.91; Can't delete an empty symlink when trashing is enabled for root

[Stefan Kangas <stefankangas@gmail.com>]

the_wurfkreuz via "Bug reports for GNU Emacs, the Swiss army knife of
text editors" <bug-gnu-emacs@gnu.org> writes:

> If I evaluate the code to enable trashing for root and try to delete an empty symbolic link from Eshell, I get:
> File is missing: /path/to/link
>
> Steps to reproduce:
>
> 1. emacs -Q
> 2. M-: (connection-local-set-profile-variables 'remote-trash-directory '((trash-directory . "/sudo::~/.local/share/trash/")))
> 3. M-: (connection-local-set-profiles `(:application tramp :protocol "sudo" :machine ,(system-name)) 'remote-trash-directory)
> 4. M-x eshell
> 5. (require 'em-tramp)
> 6. (setq delete-by-moving-to-trash t)
> 7. sudo touch /usr/local/bin/test-file
> 8. ln -s /sudo::/usr/local/bin/test-file /sudo::/usr/local/bin/test-file-line
> 9. sudo rm /usr/local/bin/test-file
> 10. sudo rm /usr/local/bin/test-file-line
>
> "File is missing: /usr/local/bin/test-file-link".
>
> Expected behavior:
>
> I'm able to delete it.

I'm copying in Jim Porter.