No path shown with Invalid filename error

### Problem

When trying to copy a file with an "Invalid filename", there is no information shown on where the file is in the error dialog. This problematic when for example copying a large amount of files. Without the path a lot of context is missing.


More specifically I was trying to backup my home folder and apparently there are files like:
`./.cache/io.elementary.appcenter/screenshots/1cc61524.png?raw=true`
But now I had to use `find . -name "1cc61524.png*" -print` to figure this out.
This happened when I was trying to backup files from a ext4 to a NTFS formatted drive.

### Proposal

The details panel includes information on the path.

### Prior Art (Optional)

In other cases, with for example permission issues, the path is included.