Change how changes to media attachments are stored for edits (#17696)

* Change how changes to media attachments are stored for edits

Fix not being able to re-order media attachments

* Fix not broadcasting updates when polls/media is changed through ActivityPub

* Various fixes and improvements

* Update app/models/report.rb

Co-authored-by: Claire <claire.github-309c@sitedethib.com>

* Add tracking of media attachment description changes

* Change poll in status edit to have a structure closer to the real one

Co-authored-by: Claire <claire.github-309c@sitedethib.com>

app/views/admin/trends/statuses/_status.html.haml

@@ -9,7 +9,7 @@
       = link_to ActivityPub::TagManager.instance.url_for(status), target: '_blank', class: 'emojify', rel: 'noopener noreferrer' do
         = one_line_preview(status)
 
-        - status.media_attachments.each do |media_attachment|
+        - status.ordered_media_attachments.each do |media_attachment|
           %abbr{ title: media_attachment.description }
             = fa_icon 'link'
             = media_attachment.file_file_name