Show the comment authored time in comment search results

This uses the same HAML as in `app/views/shared/notes/_note.html.haml`
to show the note authored time.

app/views/search/results/_note.html.haml

@@ -20,6 +20,11 @@
       ·
       = link_to note.noteable.title, note_url, data: {track_event: 'click_text', track_label: 'noteable_title', track_property: 'search_result'}
 
+    %span.note-headline-light.note-headline-meta
+      %span.system-note-separator
+        ·
+      %span.system-note-separator= time_ago_with_tooltip(note.created_at, placement: 'bottom', html_class: 'note-created-ago')
+
   .note-search-result
     .term
       = search_md_sanitize(note.note)

changelogs/unreleased/authored-date-on-comments-in-search.yml

+---
+title: Show the comment authored time in comment search results
+merge_request: 40472
+author:
+type: added