style(attachment): enable underlined link on refresh link

app/assets/stylesheets/attachment.scss

@@ -16,12 +16,6 @@
 
 }
 
-.attachment-link {
-  a:not(:hover) {
-    background-image: none; // remove DSFR underline
-  }
-}
-
 .attachment-error {
   display: flex;
   width: max-content;

app/components/attachment/show_component/show_component.html.haml

@@ -9,6 +9,7 @@
   - else
     %span{ data: poll_controller_options }
     = attachment.filename.to_s
+    %span.fr-text-mention--grey
       - if attachment.virus_scanner.pending?
         (analyse antivirus en cours
         = link_to "rafraichir", attachment_path, data: { action: 'turbo-poll#refresh' }